Archival objects in this container: Final reserve estimate, Wisser and Cox, consulting geologists, 1959 Old records, underground and quarry, 1949-1952 Fuel receipt book, 1965-1980 Fuel storage and fast-fill maps, undated Compressed air information, 1978 Equipment hours, 1955 Monthly hour meter reports, 1981 Monthly availability study, 1982 Waste removal cost analysis, 1948-1956 Ore reserves, Marion's figures, 1959 Drill sample check, 1951 Miscellaneous rotary drill holes, 1952-1956 Rotary drill holes mill construction, 1953 November Joy rotary drill daily logs, 1951 Survey progess, 1947 November Buckets and tonnage, 1962 California Portland Cement Company, downhole, 1957 Excavation projects, 1952 Gardner-Denver mold drill, 1959 Hydraulic boom assembly for AirTrac, Ingersoll-Rand, 1957 Cut-off calculations, 1958 Gypsum shooting analysis, pit 8, 1954 Mining equipment performance and availability, 1972 Ore waste estimates, 1970 Ore and waste schedule, 1979-1980 Load More
