Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
121 results returnedSearch results
- 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
- Notes on precautions to be taken when drilling oil or gas wells through workable coal beds or through mine workings
- Methods and costs of mining at Hartley-Grantham mine, Tri-State zinc and lead district
- Shrinkage stoping
- Methods and cost of mining fluorspar at Rosiclare, Ill.
- The mineral industry and the young engineer
- Construction of the Wachusett-Coldbrook Tunnels
- Shaft-sinking methods, practices, and costs of the Consolidation Coal Co. at its no. 261 mine, Caretta, McDowell County, W. Va.
- 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
- Shaft-sinking methods and costs, and cost of plant and equipment at the Macassa Mine, Kirkland Lake, Ontario
- Factors and conditions that aid in alinement of pillar extraction lines in coal mining
- Dry cells and their application to mining
- Methods of development and pillar extraction in mining the Pittsburgh coal bed in Pennsylvania, West Virginia, and Ohio
- Sand and gravel excavation.
- The design of small wooden head frames
- Strategic minerals investigations :procedure followed by the Bureau of Mines
- Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence
- Good Fortune Iron Mine, Platte County, Wyo.
- Shaft-sinking methods and costs and cost of plant and equipment at the Fad shaft, Eureka Corp., Ltd., Eureka, Nev.
- 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
- Yieldable steel arches and yieldable steel ring supports in metal mines
- Industrial engineering practice at selected metal mines in western states
- Test operation of a pneumatic vibrating-blade planer in phosphate and coal :a progress report on planer-mining research, 1958-60
- 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
- Determination of principal stress directions through an analysis of rock joint and fracture orientations, Star Mine, Burke, Idaho
- Mining method, technique, and cost of presplitting the flood control gate shaft, Littleville Dam, Huntington, Mass.
- Stresses induced around mine development workings by undercutting and caving, climax molybdenum mine, Colorado (in two parts).
- Stresses induced around mine development workings by undercutting and caving, Climax Molybdenum Mine, Colorado (in two parts).
- Mining methods and practices at the Young Mine, American Zinc Co. of Tennessee, Jefferson County, Tenn.
- Vibration levels transmitted across a presplit fracture plane
- Creep in model pillars
- 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