Search U.S. government technical reports digitized or harvested by TRAIL.
Mining and treatment of lead and zinc ores in the Joplin district, Missouri :a preliminary report
Feldspar mining and milling :near Keene, New Hampshire
Milling methods in the tri-state zinc district
Accidents at metallurgical works in the United States :during the calendar year 1921
Accidents at metallurgical works in the United States :during the calendar year 1922
Accidents at metallurgical works in the United States :during the calendar year 1923
Accidents at metallurgical works in the United States :during the calendar year 1924
Accidents at metallurgical works in the United States :during the calendar year 1925
Preliminary ore dressing tests to recover manganese in rhodochrosite ores.
Accidents at metallurgical works :during the calendar year 1926
Centrifugal concentration :its theory, mechanical development and experimental results
Accidents at metallurgical works in the United States :during the calendar year 1927
Classification and tabling of difficult ores :with particular attention to fluorspar
Roasting of lead-carbonate ores preliminary to gravity concentration
Accidents at metallurgical works in the United States :during the calendar year 1928
Re-treatment of mother lode carbonaceous slime tails
Concentration tests on tailings from the washing plants on the Mesabi Range, Minnesota
Milling methods and costs at the lead concentrator of the Hecla Mining Co., Gem, Idaho
Accidents at metallurgical works in the United States :during the calendar year 1930
Accidents at metallurgical works in the United States :during the calendar year 1931
Accidents at metallurgical works in the United States during the calendar year 1932
Progress report - metallurgical division.
Summary of ore-mining cost data
The flotation of Alabama graphite ores
Lead and zinc mining and milling in the United States :current practices and costs
Concentration of the potash ores of Carlsbad, New Mexico, by ore dressing methods
Progress reports - metallurgical division.
Progress reports - metallurgical division.
Progress reports - metallurgical division.
Beneficiation of spodumene by decrepitation
Ball-mill grindability indexes of some American coals
Progress reports - metallurgical division.
Primary crushing :progress report no. 1
Primary crushing :progress report no. 2
Progress reports - metallurgical division.
Primary crushing :progress report no. 3
Mining and milling methods and costs at the Tennessee-Schuylkill Corporation mine, Chloride, Ariz.
Progress reports :metallurgical division.
Progress reports :metallurgical division.
Contributions to the art of smelting lead products
Progress reports - Metallurgical Division.
Progress reports :metallurgical division.
Progress reports :metallurgical division.
Progress reports :metallurgical division.