Gold Distribution in Diamond-drill Core from the Homestake Mine, Lead, S. Dak

Oxygenates in Automotive Exhaust Gas: Estimation of Levels of Carbonyls and Noncarbonyls in Exhaust from Gasoline Fuels, Issues 7661-7680

Test Operation of a Pneumatic Vibrating-blade Planer: A Progress Report on Phosphate Mining Research, Issues 6861-6880

Multiple Zone Mining Plus Beneficiation of Western Phosphate Rock: A Cost Estimate and Comparison with Selective Mining, Issues 7501-7520

Low-temperature Heat Capacities and Entropies at 298.15° of Sulfides of Arsenic, Germanium and Nickel: 1963

Factors Influencing the Incendivity of Permissible Explosives: Ammonium Nitrate and Carbonaceous Material, Issues 5861-5880

Calibration of a Rotating Piston Deadweight Gage by Means of a Mercury Column Less that 1 Meter High: Significance of Piston Constants and Their Applications, Issues 6821-6840

Determining Phosphorous in Coal and Coke: Evaluation of Volumetric, Colormetric, and Gravimetric Methods, Issues 5741-5760