Search U.S. government technical reports digitized or harvested by TRAIL.
Relation of lead poisoning in Utah to mining
Quarry problems from the engineer's viewpoint
Stop, look and listen! :the roof is going to fall
How are men killed in mines by falls of roof and coal?
Area of unsupported roof in coal mines :conditions and factor[s] for consideration
Methods and costs of mining at Hartley-Grantham mine, Tri-State zinc and lead district
Methods and cost of mining fluorspar at Rosiclare, Ill.
The mineral industry and the young engineer
Construction of the Wachusett-Coldbrook Tunnels
Factors governing the selection of the proper level interval in underground mines
Milling methods and costs at the Hillside Fluorspar mines, Rosiclare, Ill.
Mining and technology graduates and their problems
Factors and conditions that aid in alinement of pillar extraction lines in coal mining
Dry cells and their application to mining
The design of small wooden head frames
Strategic minerals investigations :procedure followed by the Bureau of Mines
Good Fortune Iron Mine, Platte County, Wyo.
The determination of low concentrations of hydrogen sulfide in gas by the methylene blue method
Methods of excavation and roof support used in some recently constructed tunnels
Development of a rotary test drill
Centrifugal testing apparatus for mine-structure stress analysis
Design of underground mine openings oil-shale mine, Rifle, Colo.
Anthracite mechanical-mining investigations :second testing of Brieden pneumatic packing machine
Raising with a suspended work cage at the Irene Shaft, Leadville, Colo.
Extracting final stump in pillars and pillar lifts with continuous miners
Industrial engineering practice at selected metal mines in western states
Yieldable steel arches and yieldable steel ring supports in metal mines
Changes in stress concentration created by undercutting in block caving
Design and development of a rock bolt anchored by explosive forming :a progress report
Experimental longwall mining in a Pennsylvania anthracite mine (In two parts).
A case study of the validity of scaling laws for explosion-generated motion
Vibration levels transmitted across a presplit fracture plane
Measurement of lateral pressure generated from cylindrical explosive charges
Photoelastic study of an internally stressed circular opening in a biaxial stress field
Critical path planning and scheduling applied to mining operations