| Show IDAHO MINING DISTRICTS bulletin A preliminary report on the mining districts of idaho by thomas varley superintendent of the salt lake mining experiment station of the bureau of mines department of the interior and others has just been issued in 1917 the Jile federal deral bureau of mines and the university of idaho arranged to co cooper oper looking to the improvement investigation ate in an of mining a and nd milling methods pro in the mining districts of tile the state of idaho with an especial view to the wider development of tile the mineral deposits a and nd greater efficiency in the trea treatment till ent of the low grade ores of the state this wa work rk has been made largely through the gener generosity dosity and POs possible sible active alsista assistance nce of the mine operators es specially ally certain companies in the coeur dahlene dA elene region As the first step in the work under the operative cooperative co agreement it was decided to gather all data possible on the various mining districts throughout the state both active and abandoned in order to ascertain their potential possibilities especial attention being paid to methods of metallurgical treatment and to the solution of the many metallurgical problems in order to effect a greater commercial saving with this plan in view field work was begun in the latter part of may 1917 and was continued during the summer E K soper formerly professor of mining university of idaho and now dean of the mining department of oregon agricultural college corvallis oregon visited the mining districts in central and southwestern idaho and also some of those in the northern part of the state D C livingston professor of geology at the university of idaho moscow idaho also visited some of the mining districts in central idaho during the summer in addition much valuable information he had gathered on former trips to many other districts is included in this report credit is also due mr livingston for the maps covering the state as well as the bibliography at the end of each chapter thomas varley spent a short time in the field principally in the mining districts in central and northern idaho and made a brief visit to the southwestern districts with mr soper the field work of mr C A wright metallurgical engineer of the bureau of mines in direct charge of the operative cooperative co work was chiefly in the occur dalene region mr wright visited nearly all of the mining districts in the region and devoted most of his time to studying the milling methods the bulletin alms aims to give the localities of the various mining districts and the nature of the present operations and those that have been carried on in the past the writers do not wish to imply that all districts mentioned in this bulletin were visited during the summer of 1917 for a great deal of the material has been gathered from other reports especially from publications of the united states geological survey however it is hoped that this report will be of help to those who are interested in mining in the state of idaho the plan is to continue the field work and subsequently publish the results of the investigations in much more detail with greater emphasis given the metallurgical el treatment of the ores and the problems involved copies of this bulletin may obtained by addressing I 1 the director of the bureau of mines washington D C |
