After the 1939 bushfires, the Forests Commission Victoria invested heavily in a radically new communications network. After suffering some inevitable delays due to the war, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. The advent of solid-state electronics in the 1960s replaced the more delicate valve sets which enabled greater use of vehicle mounted radios. The Commission continued to research, develop and build new radios at its many workshops around Victoria. The network was supported by a large team of skilled radio technicians. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 5G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s. Used to communicate to remote fire towers Single wire often run through the bush from FCV district officesFire tower telephone with winderChristmas Hills South Instructions for use around winderbushfire, radios, forests commission victoria (fcv)

After the 1939 bushfires, the Forests Commission Victoria invested heavily in a radically new communications network. After suffering some inevitable delays due to the war, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. The advent of solid-state electronics in the 1960s replaced the more delicate valve sets which enabled greater use of vehicle mounted radios. The Commission continued to research, develop and build new radios at its many workshops around Victoria. The network was supported by a large team of skilled radio technicians. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 5G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s. Used to communicate to remote fire towers Single wire often run through the bush from FCV district officesFire tower telephone with winderChristmas Hills South Instructions for use around winderbushfire, radios, forests commission victoria (fcv)

After the 1939 bushfires, the Forests Commission Victoria invested heavily in a radically new communications network. After suffering some inevitable delays due to the war, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. The advent of solid-state electronics in the 1960s replaced the more delicate valve sets which enabled greater use of vehicle mounted radios. The Commission continued to research, develop and build new radios at its many workshops around Victoria. The network was supported by a large team of skilled radio technicians. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 5G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s. Used to communicate to remote fire towers Single wire often run through the bush from FCV district officesFire tower telephone with winderWattle Glen Diamond Creekbushfire, radios, forests commission victoria (fcv)

After the 1939 bushfires, the Forests Commission Victoria invested heavily in a radically new communications network. After suffering some inevitable delays due to the war, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. The advent of solid-state electronics in the 1960s replaced the more delicate valve sets which enabled greater use of vehicle mounted radios. The Commission continued to research, develop and build new radios at its many workshops around Victoria. The network was supported by a large team of skilled radio technicians. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 5G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s. Used to communicate to remote fire towers Single wire often run through the bush from FCV district officesFire tower telephone with winderWattle Glen Diamond Creekbushfire, radios, forests commission victoria (fcv)

After the 1939 bushfires, the Forests Commission Victoria invested heavily in a radically new communications network. After suffering some inevitable delays due to the war, radio VL3AA switched into full operation in October 1945 proudly beaming out 200 watts across the State. But by today’s standards, the technology was primitive and the reception poor unless the user was on a high point somewhere. The radio signal was "line-of-sight" and bounced between fire towers and relay transmitters across the mountains back to the District offices. The advent of solid-state electronics in the 1960s replaced the more delicate valve sets which enabled greater use of vehicle mounted radios. The Commission continued to research, develop and build new radios at its many workshops around Victoria. The network was supported by a large team of skilled radio technicians. The more secure and versatile State Mobile Radio (SMR) digital trunk system came into operation in about 1995. Upgraded Tait Radios were purchased in 2014 after recommendations of the 2009 Bushfires Royal Commission. But it was the convergence of separate technologies such as 5G mobile phones, high-capacity and light-weight lithium batteries, Wi-Fi, the ever-expanding internet, cloud data storage, digital cameras, GPS, personal organisers and hundreds of supporting Apps into powerful smartphones and tablets which revolutionised bushfire communications from the mid-2000s. AWA ReceiverType IC 9640bushfire, radios, forests commission victoria (fcv)

Bushfire perimeter rather than bushfire area is the main control problem for firefighters on the ground. A conundrum rapidly compounded by spot fires. A small 5 ha fire can be nearly 1 km around the perimeter. That's a long way to build a control line by hand in rough bush. Dry firefighting techniques by hand were mostly confined to “knocking down” or “beating out” the flames, as well as "digging out". Digging or raking a “mineral earth” trail down to bare dirt proved most effective in forest fuels which, unlike grass, tend to retain heat and smoulder. Early tools were whatever happened to be close at hand. They were simple and primitive and included shovels, slashers, axes, hoes, beaters and rakes. A cut branch to beat the flames was often the only thing available. Farming and logging tools, developed over centuries of manual labour, and readily available at local hardware stores came into use, but little thought was given to size, weight, and balance. For years foresters experimented with combination tools. In about 1952 fire beaters and other implements were being replaced with Rakuts. However, its believed the now common Rakehoe is an Australian variation of the American McLeod Tool which was developed in 1905 by forest ranger Malcolm McLeod of the Sierra National Forest. The late Athol Hodgson advised that predecessors, Reg Torbet who had been the Chief Fire Officer for the Forests Commission from 1948-1956, along with his QLD counterpart Clive Price, went in late 1951 as Australian delegates on a 10 week fire study tour of Nth America organised by the United Nations. They came back with a couple of McLeod tools from Canada. Cam MacLeod (different spelling) had been the Head of Fire Research for the Canadian Forest Service at the time and had supplied them. The tools were ideal for deciduous forests in the eastern provinces and Clive arranged to have them manufactured in QLD. The Rakho, as it was then spelled, was first issued to FCV crews 65 years ago in 1955-56. The American Pulaski had been trialled, but never found favour with Australian firefighters.Fire Beater (canvas) 1930s designforests commission victoria (fcv), hand tools, forest harvesting, bushfire

The FCV used green flashing lights rather than redPortable 12 volt flashing light for use on fire tankersforests commission victoria (fcv), bushfire, safety equipment

used at fire basecampsWood fire "copper" to heat water at basecampsforests commission victoria (fcv), bushfire, camping equipment

The Canadians developed a machine that used "ping pong balls" instead of cylindrical incendiary capsules and, in 1977, the FCV purchased a Premo machine for evaluation. The 32mm-diameter balls were made from high impact polystyrene and contained 3.5g of potassium permanganate. They were injected with 1ml of glycol which would ignite after a short delay The first Premo machine used four slipper blocks, which were loaded via a hand-operated hopper which, when rotated forward, the balls would be fed into four feed chutes to individual slipper blocks. Each slipper block has an opening allowing individual balls to enter and exit once injected. The original design of the machine was not suitable to meet the burning objectives and a number of modification were necessary. Following close inspection and field testing it was clear that utilising four slipper blocks was excessive and would generate too much fire. It was acknowledged that satisfactory spacing could be achieved by using just one slipper block. Selective spacing could be achieved by the speeding up or slowing down of the slipper block transferring the capsules during the injection process. Regulating the speed that the injected capsules were being dropped controlled the amount of fire created on the ground. This machine was the result of many years of experimentation at AltonaSignificant development of aerial incendiary machines enabled expansion of the fuel reduction burning program across Victoria.Aerial Incendiary machine for use in helicopters Modification at the Altona workshops over many years by Barry Marsden forests commission victoria (fcv), planned burning, bushfire, bushfire aviation

In November 2024, a small group of cheerful volunteers from the Forests Commission Retired Personnel Association (FCRPA) toiled over nine days to dust-off, photograph and record nearly 300 artifacts in DEECA's Altona Museum. It followed a similar project at the FCRPA's Beechworth Museum in February 2024. The Altona project was generously supported by DEECA / FFMVic to engage professional photographer Mark Jesser from Wodonga whose boundless energy and good humour helped to create these amazing images. Special thanks go to the FFMVic Chief Fire Officer, Chris Hardman, as well as Andrew Stanios and Kat Jensen for making it happen. FFMVic crews and the ever-patient staff from Altona took a strong interest and also helped to shift some of the heavy items like pumps and the Bedford tanker which was very welcome. The Forests Commission and its successors continuously encouraged bushfire research and innovation. In 1946 a large parcel of industrial land was purchased at North Altona as a fire cache and workshop. The Altona workshop became a hotbed of new technological thingumajigs… a marvellous blend of Aladdin’s Cave of Wonders coupled with Wallace and Gromit’s madcap contraptions… an exhilarating place where lots of gizmos were invented and tested… mostly with astounding results... but nearly always with some head-scratching frustrations… and thankfully not too much explosive mayhem. In fact, a lot of Australia’s pioneering equipment development was led by staff from Altona, often in collaboration with other State forestry and fire authorities. The CSIRO also contributed significantly. The US Forest Service, the US Bureau of Land Management and US State agencies such as the California Department of Forestry and Fire (CalFire) as well as the Canadian Forest Service faced similar challenges and proved strong and willing partners in sharing knowledge, ideas, equipment and expertise over many decades. The collection at Altona started in the 1970s by fire equipment wizard Barry (Rocky) Marsden. As obsolete equipment was returned to the Fire Protection Workshop for auction, Rocky began the process of selecting some which would be interesting to retain and display. The items at Altona represent just a small sample of the amazing story of Victoria's forestry and bushfire heritage. The largest item was undoubtedly the Bedford tanker which took two days and nearly 1000 photos which were later stitched together with photoshop. The oldest item is probably the Ericsson wall telephone from 1904. There are also many unique items, but the CSIRO incendiary machine and ping-pong incendiary machine developed at Altona probably had the most significant impact on fire management in Australia. There are plenty of gaps in the collection, but some items are in regional DEECA offices. It’s hoped to merge the FCRPA's Beechworth collection to Altona one day and rename the site to honour Rocky Marsden. There may be some additions to the Altona museum over time, but space is limited. The museum is available to visit by appointment. Peter McHugh - January 2025 forests commission victoria (fcv)

Firefighting often requires walking through the rough bush with handtools to construct control likens. This carry pack was designed in-house to enable the safe transport of a small chainsaw See FIRE EQUIPMENT NOTE - 35 [ https://drive.google.com/file/d/1CKtcH-3rUlrtbE9dkNP27PYT2-raVVhF/view ] A fibreglass-moulded backpack to enable chainsaw operators to safely carry saws in rough or steep terrain. Weighing just 3 kg the backpack is fitted with a padded shoulder harness, waist strap and includes two 1lt Sig Bottles for storage of a small quantity of fuel and oil. A separate storage compartment is also provided for accessories such as spare chain, sharpener and tool kit. Stihl 034 and 038 size chainsaws will fit into the backpack quite comfortably.Fibreglass carry pack for small chainsawCFLforests commission victoria (fcv), bushfire, hand tools

The Aerial Drip Torch (ADT) was an idea conceived in Canada in the 1970s by John Muraro It was developed in 1982 by the New Zealand Forest Service to become the Ashley Aphid Helitorch. Forestry Tasmania acquired one of the machines and modified it in February 1987. Also known as a dragon helitorch it consisted of a large 135-litre tank containing jellied petrol, a displacement pump, propane ignition system, burner nozzle and fire extinguisher system. It was first trialled in Victoria at Swifts Creek in 1991 and the Aerial Drip Torch (ADT) has now become standard practice.Two Aerial Drip Torches (ADTs) were built in the 1990s by the Fire Equipment Development Centre at North Altona, They were developed in conjunction with the Department of Conservation and Land Management in Western Australia. The first was trialled during the 1991/92 autumn burning season. The machine proved to be successful and a second machine was introduced in 1998 to assist with burning operations across the State. The ADTs were commonly used for regeneration burning (controlled burning of logging slash). The first ADT introduced in 1992 had a dry weight of 160kg and a capacity of 130 litres, providing about an hour of operation. Following initial use, systematic modifications were adapted including improved ignition of gel at the drop tube, installation of an air bleed valve at the pump to assist pump priming and improved mounting brackets for the CO2 bottles and propane canister attached to the machine. The second, and lightweight ADT, introduced in 1998 had a dry weight of 68kg and a capacity of 200 litres due to a smaller lightweight frame and plastic (Polyfin) tank. In operation the ADT is suspended below a helicopter via four strops attached to the vessel and a cable to the helicopter cargo hook. Gelled fuel is dispensed via a drop tube which is attached to the pump outlet of the machine, and ignited via a gas torch. Safety features built into the first ADT were: a brass melting plug designed to be activated at 200 C bursting disc designed to burst at170 Kpa should the vessel over pressurise. a pressure relief valve set to 35 Kpa ( vessel operated between 16 &34 Kpa) a low pressure sensor designed to shut down the machine should the vessel pressure drop below 15Kpa. the vessel is filled with CO2 above the gelled fuel to eliminate ignition with in the vessel. CO2 is used to expel any residue of ignited gel from the drop tube to prevent ignition when flying outside the boundaries of the burning area. See FIRE EQUIPMENT NOTE - 46 [ https://drive.google.com/file/d/1CKtcH-3rUlrtbE9dkNP27PYT2-raVVhF/view ]forests commission victoria (fcv), bushfire, bushfire aviation, planned burning

The Furphy Water Cart, made in Shepparton is an iconic part of Australian manufacturing history. Troops gathered around these sturdy carts during WW1 to have a drink of water, to swap stories, and embellish them a bit along the way. This led eventually to the term 'furphy' entering the Australian vernacular, meaning a rumour, gossip or fake news. Many people have probably heard ... “GOOD, BETTER, BEST - NEVER LET IT REST - TILL YOUR GOOD IS BETTER - AND YOUR BETTER, BEST." But the random squiggles across the centre of a Furphy water tank are not Arabic writing as many believe but Pitman Shorthand that translates as … “WATER IS THE GIFT OF GOD, BUT BEER AND WHISKY ARE CONCOCTIONS OF THE DEVIL, COME AND HAVE A DRINK OF WATER”. Several versions evolved over the decades and this 1942 cart also has an illustration of a stork holding a baby with more squiggles underneath, also in shorthand, which is a quote often first attributed to the WW1 Prime Minister Billy Hughes ... "PRODUCE AND POPULATE OR PERISH”. The Forests Commission owned lots of Furphy water tanks and Rocky Marsden managed to rescue and restore two of them which are at the North Altona workshops.Two Furphy water tanks forests commission victoria (fcv), fire pump, bushfire

Saw Mills Halls Gap (Childe’s Glenbower Creek). Part of a collection of Photographs by Mr. O.G. Armstrong as commissioned by the Shire of Stawell for the Inter-colonial and Paris Exhibition in Melbourne in 1866. During the years of gold, the hardwood forests around Stawell were ravaged to provide timber for the mines. It was used undergrounds to shore up workings, and millions of feet of it were fed into furnaces and kilns in which the quartz was roasted. In the years after the gold boom, hardwood from the Grampians was milled for building timber. Wherever there are large tracts of natural bushland, fires are always a danger. A huge fire in January 1939 caused havoc in the Grampians, burning out towns and sawmills such as the one pictured. There have been no sawmills in the Grampian since that fire. stawell industry

Bushfire perimeter rather than bushfire area is the main control problem for firefighters on the ground. A conundrum rapidly compounded by spot fires. A small 5 ha fire can be nearly 1 km around the perimeter. That's a long way to build a control line by hand in rough bush. Dry firefighting techniques by hand were mostly confined to “knocking down” or “beating out” the flames, as well as "digging out". Digging or raking a “mineral earth” trail down to bare dirt proved most effective in forest fuels which, unlike grass, tend to retain heat and smoulder. Early tools were whatever happened to be close at hand. They were simple and primitive and included shovels, slashers, axes, hoes, beaters and rakes. A cut branch to beat the flames was often the only thing available. Farming and logging tools, developed over centuries of manual labour, and readily available at local hardware stores came into use, but little thought was given to size, weight, and balance. For years foresters experimented with combination tools. In about 1952 fire beaters and other implements were being replaced with Rakuts. However, its believed the now common Rakehoe is an Australian variation of the American McLeod Tool which was developed in 1905 by forest ranger Malcolm McLeod of the Sierra National Forest. The late Athol Hodgson advised that predecessors, Reg Torbet who had been the Chief Fire Officer for the Forests Commission from 1948-1956, along with his QLD counterpart Clive Price, went in late 1951 as Australian delegates on a 10 week fire study tour of Nth America organised by the United Nations. They came back with a couple of McLeod tools from Canada. Cam MacLeod (different spelling) had been the Head of Fire Research for the Canadian Forest Service at the time and had supplied them. The tools were ideal for deciduous forests in the eastern provinces and Clive arranged to have them manufactured in QLD. The Rakho, as it was then spelled, was first issued to FCV crews 65 years ago in 1955-56. The American Pulaski had been trialled, but never found favour with Australian firefighters.Pulaski Fire Tool Combines an axe and a grubbing hoe. Digging end and cutting end with short wooden handleforests commission victoria (fcv), hand tools, forest harvesting, bushfire

Bushfire perimeter rather than bushfire area is the main control problem for firefighters on the ground. A conundrum rapidly compounded by spot fires. A small 5 ha fire can be nearly 1 km around the perimeter. That's a long way to build a control line by hand in rough bush. Dry firefighting techniques by hand were mostly confined to “knocking down” or “beating out” the flames, as well as "digging out". Digging or raking a “mineral earth” trail down to bare dirt proved most effective in forest fuels which, unlike grass, tend to retain heat and smoulder. Early tools were whatever happened to be close at hand. They were simple and primitive and included shovels, slashers, axes, hoes, beaters and rakes. A cut branch to beat the flames was often the only thing available. Farming and logging tools, developed over centuries of manual labour, and readily available at local hardware stores came into use, but little thought was given to size, weight, and balance. For years foresters experimented with combination tools. In about 1952 fire beaters and other implements were being replaced with Rakuts. However, its believed the now common Rakehoe is an Australian variation of the American McLeod Tool which was developed in 1905 by forest ranger Malcolm McLeod of the Sierra National Forest. The late Athol Hodgson advised that predecessors, Reg Torbet who had been the Chief Fire Officer for the Forests Commission from 1948-1956, along with his QLD counterpart Clive Price, went in late 1951 as Australian delegates on a 10 week fire study tour of Nth America organised by the United Nations. They came back with a couple of McLeod tools from Canada. Cam MacLeod (different spelling) had been the Head of Fire Research for the Canadian Forest Service at the time and had supplied them. The tools were ideal for deciduous forests in the eastern provinces and Clive arranged to have them manufactured in QLD. The Rakho, as it was then spelled, was first issued to FCV crews 65 years ago in 1955-56. The American Pulaski had been trialled, but never found favour with Australian firefighters.First used in 1955Rakehoe Combination of a heavy-duty six-toothed (each 9cm long) rake with a large, sturdy (25cm) hoe.bushfire, forests commission victoria (fcv)

Nine panels showing Fire in Victoria from Black Thursday 1851to 1951

A description of efforts to fight the bushfires in Gippsland in 2003, including maps and illustrations. This volume was published as a tribute to the work of staff and volunteers who put themselves at risk to protect local communities. It shows the impact on those communities in Victoria and the support they gave to those involved in fighting largest bushfires in Victoria for 60 years. The Alpine bushfires started on 8th January 2003, a day of Total Fire Ban. Lightning ignited 87 fires in the North-East and East Gippsland regions. Eight of these fires were unable to be contained; they joined together to form the largest fire in Victoria since the Black Friday fires in 1939. The majority of the area burnt in Victoria was public land, 1.19 million hectares of parks and forests, including 60 per cent of the Alpine National Park and 81 per cent of the Mt Buffalo National Park. Firefighting efforts were made difficult in hard-to-access, remote forest terrain. Approximately 90,000 hectares of private land was burnt.This book is significant because it documents the 2003 Victorian Bushfires and serves as a tribute to the CFA staff and volunteers who fought them.This publication of 119 pages features text, colour images, maps and detailed information related to the 2003 bushfires in Victoria.At bottom of front cover:- CFA Victoria Logo Victorian Government Logovictorian fires 2003, cfa (vic)

Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. A thermo-hygrograph measures and records both temperature and humidity. It produces a continuous record by drawing ink traces on a paper chart held in revolving cylinder. Humidity is measured by shortening or lengthening of a bundle of specially treated human hair. Temperature is measured by means of a laminated bi-metal strip of temperature-sensitive metals which bend differentially with temperature change. The recording drum is driven by clockwork which may be geared for rotation intervals of daily, weekly or monthly periods. This particular instrument is a seven-day recorder. Serial number 10186 which probably dates from about 1960. The chart indicates it was last used in March 1979.Used for bushfire research.Clockwork Thermo-hygrographCasella London 10186 Made in England Research Branch. Forests Commission Orbostbushfire, forests commission victoria (fcv), forest measurement

Used to prepare fuel samples to measure their moisture content. Representative samples of fine fuel such as bark, leaves, twigs etc were minced first through a course mincing plate, then a fine plate and the moisture content measured with a Speedy moisture meter or other device. The availability of fuel to burn depends largely on its moisture content. When it exceeds 20-25% not much will burn, whereas 12-15% is generally ideal for fuel reduction burning, but if the moisture content drops as low as 7-10% virtually everything will ignite, and fire behaviour becomes extreme. During the afternoon of the Ash Wednesday bushfires on 16 February 1983 fuel moisture contents were recorded at Stawell as low as 2.7%. Fine fuels like leaves and bark can rapidly absorb moisture after a shower of rain, or from the air when the Relative Humidity (RH) is high, and the temperature is low. Conversely, they can also dry out very quickly. So even though the overall fuel quantity in the forest doesn’t change, the fine fuel availability can increase rapidly from zero after rain to many tonnes per hectare as the fuel dries out. This can happen over a few hours on hot and windy days. Heavy fuels like logs on the ground take longer to dry out. Spong No 10 food mincerforests commission victoria (fcv), bushfire, forest measurement

Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. A thermo-hygrograph measures and records both temperature and humidity. It produces a continuous record by drawing ink traces on a paper chart held in revolving cylinder. Humidity is measured by shortening or lengthening of specially treated horse hair. Temperature is measured by means of a bi-metallic strip. This particular instrument is a seven day recorder. The instrument is driven by clockwork. Thermo-hygrographNegretti & Zambra

Bushfire behaviour is influenced by many things including temperature, relative humidity, forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), and also bushfire size, shape and direction. Fuel arrangement is as important as fuel quantity (tonnes/ha). Fibrous and ribbon bark, together with elevated and near-surface scrub fuels act as ladders which lead flames into the tree canopy. But the availability of fuel to burn depends largely on its moisture content. When it exceeds 20-25% not much will burn, whereas 12-15% is generally ideal for fuel reduction burning, but if the moisture content drops as low as 7-10% virtually everything will ignite, and fire behaviour becomes extreme. During the afternoon of the Ash Wednesday bushfires on 16 February 1983 fuel moisture contents were recorded at Stawell as low as 2.7%. Fine fuels like leaves and bark can rapidly absorb moisture after a shower of rain, or from the air when the Relative Humidity (RH) is high, and the temperature is low. Conversely, they can also dry out very quickly. So even though the overall fuel quantity in the forest doesn’t change, the fine fuel availability can increase rapidly from zero after rain to many tonnes per hectare as the fuel dries out. This can happen over a few hours on hot and windy days. Heavy fuels like logs on the ground take longer to dry out. Since the 1930s foresters, firefighters and researchers have been working to develop quick and reliable techniques for measuring fuel moisture content. One of the most accurate methods is slowly drying a sample of fuel in a conventional oven for 24-48 hours to remove all the moisture and measuring the weight difference, but this takes time and is not practical in the field when rapid measurements are needed. But oven drying is often used as a benchmark to compare other methods. Microwave ovens are faster but can cause uneven drying and even char the fuel. They are also not very practical for use in the field. Some mathematical models rely on weather records such as rainfall, wind speed, evaporation, cloud cover, shading, relative humidity, slope, aspect and season of the year to predict soil and fuel moisture. The Keetch-Byram Drought Index of soil dryness is the most common. But complex fuels with leaves, twigs, grass etc make the predictive models often inadequate for fine fuels. The most common technique in Victorian forests until recently was the trusty Speedy Moisture Meter. Originally developed in England during the 1920s for measuring moisture in wheat and other grains it was adapted for Australian forest fuels in the 1950s (I think). Fuel was first ground using a Spong mincer, often attached to the bullbar of a vehicle, and a small sample placed into the Speedy together with a measure of calcium carbide and then sealed. A chemical reaction created gas pressure which was read on the external dial. There were important techniques with cleaning, mincing and using the chemicals with the Speedy to give reliable readings, but it was quick, inexpensive, robust, portable and practical in the field. It was used routinely before igniting a fuel reduction burn or measuring fuel moisture differentials on slash burns. But in about 1996, Karen Chatto and Kevin Tolhurst from the Department’s Creswick Research Station developed the Wiltronics Fuel Moisture meter which measured electrical resistance. Wiltronics is an Australian owned company operating from Ballarat. The final result was a kit that was portable, accurate and could reliably measure fuel moisture contents between 3% and 200%. Although expensive, it is now widely used by fire agencies around the world which has virtually relegated the Speedy to the back cupboard.Prototype Fuel moisture meterT-H Fine Fuel Meterforests commission victoria (fcv), bushfire, forest measurement

Representative samples of fuel such as bark, leaves, twigs etc were minced and the moisture measured The availability of fuel to burn depends largely on its moisture content. When it exceeds 20-25% not much will burn, whereas 12-15% is generally ideal for fuel reduction burning, but if the moisture content drops as low as 7-10% virtually everything will ignite, and fire behaviour becomes extreme. During the afternoon of the Ash Wednesday bushfires on 16 February 1983 fuel moisture contents were recorded at Stawell as low as 2.7%. Fine fuels like leaves and bark can rapidly absorb moisture after a shower of rain, or from the air when the Relative Humidity (RH) is high, and the temperature is low. Conversely, they can also dry out very quickly. So even though the overall fuel quantity in the forest doesn’t change, the fine fuel availability can increase rapidly from zero after rain to many tonnes per hectare as the fuel dries out. This can happen over a few hours on hot and windy days. Heavy fuels like logs on the ground take longer to dry out. Adaption of a timber moisture meter made by the FCV radio lab to measure fuelforests commission victoria (fcv), bushfire, forest measurement

Map. Forest Commission Victoria, Bendigo Forest District, Basic information prepared 1982, scale 1:100,000. Fire Prevention Strategy Plan. Mitiamo, Greater Bendigo Area, Castlemaine F.D.map, bendigo, forest district

This photograph was taken at Wooragee Landcare workshop (Quoll), field day in Mt Pilot park on Bush Recovery: After the Fires. This is part of the Biodiversity Month on September 2004. The Bush Recovery workshop was held on Sunday 12th September 2-4pm with Christine Watson, Sue Berwick and Natasha Schedvin, and another workshop on Wednesday, 15th September, 9am to 12 noon with local biologist Glen Johnson and botanists Gill Earl and Christine Watson. The topics involved in the training involved what species have returned, what species haven't, what recovery studies are being carried out, how are the barking owls and phascogales faring, and why is Mt Pilot important. The photograph shows L-R: Colin Payne; Jerry Alexander; Geoff Galbraith. Bush fires are common in Australia due to several reasons. One is due to the geographic spread of fire's seasons, secondly, the absence of El Nino conditions are also linked to fires. Climate change also affected Australia's hot and dry seasons. Australia's climate began warming since the 1970s. Human-induced fires also contributed to this increase in temperatures across the nation. Bush fires happened in Mt Pilot in 2003 but it has recovered well since. This makes Mt Pilot an important site to understand bushfire recovery. This photograph contributes to the scientific and historical records on bushfire recovery in Victoria. It creates a picture of Victorian community activities and efforts on biodiversity, climate change, and environmental care.Landscape coloured photograph printed on gloss paperReverse: WAN NA 0A2A0N0 NN2 0 163 / (No. 2)wooragee, wooragee landcare group, wooragee landcare, bush fires, bush recover, mt pilot, biodiversity month, botany, botanists, bush recovery, quoll, foxy, fox, forest, environment, climate change, bushfire recovery, bushfires, 2004 bushfire, field work, after the fires, fire, biodiversity