Physical description

One handwritten and typed copies (3 of page 1, 3 of page 2, 2 of page 3 and 2 of page 4). Notes include an introduction which mentions the noise of the mining activities, all the machinery being made in Bendigo by the local foundries and the end of the mining.There are explanations of poppet legs or heads, landing brace, intermediate brace, safety brace, pulley wheels, boilers, winding engine, types of engines and air compressors.