TRAIL - Technical Report Archive and Image Library

A method for predicting equilibrium values in the solvent extraction of copper in ammoniacal systems

Effect of shearer web depth on dust generation and methane liberation

Strain energy as a basis for optimizing roof truss installations in bedded roof

Probability of spark ignition in intrinsically safe circuits

Effects of various longwall chain pillar configurations on gate road stability

Geologic factors influencing the gas content of coalbeds in southwestern Pennsylvania

Techniques to increase water pressure for improved water-jet-assisted cutting

Subsidence due to undermining of sloping terrain :a case study

Model of coal dust explosion suppression by rock dust entrainment

Hydrometallurgical recovery of critical metals from hardface alloy grinding waste :a laboratory study

Methods of evaluating explosive reactivity of explosive-contaminated solid waste substances

Thermal characteristics of energized coal mine trailing cables

Causes and control of coal mine bumps

Relationship between horizontal stresses and geologic anomalies in two coal mines in southern Illinois

Horizontal and vertical load transferring mechanisms in longwall roof supports

Roof truss contact forces

Effect of fluoride inclusions on induction-slag-melted Ti-6A1-4V alloy

Measurement and control in industrial processes using an analog-to-digital telemetry system

Recovery of cobalt from spent copper leach solutions -improved elution and impurity removal techniques, with revised process economics

A tomographic computer program with constraints to improve reconstructions for monitoring in situ mining leachate

Laboratory assessment of alternative longwall stabilization materials

Rapid (grab) sampling during full-scale explosions -microscopic and analytical evaluation

Selective electrowinning of mercury from gold cyanide solutions

Stiffness characteristics of longwall shields

Electrodewatering of Bayer muds :laboratory studies

Feasibility of CO₂ monitoring to assess air quality in mines using diesel equipment

In situ horizontal stress determinations in the Yampa coalfield, northwestern Colorado

Determining corrosion rates in industrial ore grinding environments

Na₂CrO₄ from domestic chromite concentrates by an alkali-fusion method

Coal particle pyrolysis mechanisms and temperatures

New steelmaking technology from the Bureau of Mines :proceedings of an open industry briefing held in association with the Electric Furnace Conference, December 8, 1987, Chicago, IL

Water use in the domestic nonfuel minerals industry

Helium resources of the United States, 1987

Phosphate availability and supply :a minerals availability appraisal

Mine drainage and surface mine reclamation.

Effect of load rate on wood crib behavior

Solubilities of bromide salts of aluminum, cobalt, lead, manganese, potassium, and sodium when sparged with hydrogen bromide

Loading characteristics of pillars in multiple-seam mining operations

Preparation of ammonium paratungstate from a sodium tungstate-sodium chloride phase

Investigation of Methane Occurrence and Outbursts in the Cote Blanche Domal Salt Mine, Louisiana

Selected Significant Mineral Deposits in Alaska: A Minerals Availability System Overview

Potentially critical materials

Issues & needs of the mining industry :a Bureau of Mines perspective

Intrinsically safe 5-V, 4-A rechargeable power supply

Cleaning, disinfecting, and sterilizing self-contained self-rescuer mouthpiece assemblies used in hands-on training

The talc industry--an overview

Development and testing of a pneumatic scraper blade for conveyor belt cleaning

Abrasive-enhanced water-jet drill for hard rocks

Continuous flotation testing to recover a bulk sulfide concentrate from Missouri lead ore tailings

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