This mine was the richest of the once famous Devonshire group of mines situated in the Devonshire Gully, Eaglehawk. Mr. E. T. Brown arrived in Eaglehawk in 1853. In 1871 he established himself as a mining surveyor, in 1873 he was appointed as a teacher at The School of Mines, Bendigo where he taught Surveying, Mathematics and Mine Management. He died in June 1891. See https://trove.nla.gov.au/newspaper/article/187989455?searchTerm=e%20j%20brown%20mining%20surveyorFive Draftsman's drawings on cream colored waxed paper of the United Devonshire Mine showing horizontal projections at five levels; 375 feet (114mtr), 435 feet (132mtr), 505 feet (154mtr), 606 feet (185mtr), 666 feet (203mtr) The plans of each level are similar with directions of drives in compass bearings and distances in feet. There are small squares labeled pass which are shafts for hauling ore and travel pass which are shafts for moving miners. Printed in the top left corner of each plan - PLAN of the .... feet LEVEL UNITED DEVODSHIRE, G, M, Co Printed in the lower right corner - Scale16 feet to 1 inch. Handwritten underneath on two plans - E T Brown Minning & Authorized Surveyor 16/4/85. Forms part of the Margaret Roberts Collection of mining records.bendigo, gold, map, mine, margaret roberts collection, the united devonshire mine, eaglehawk, e.t. brown minning & authorized surveyor