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- The significance of solvent analysis as applied to coal
- Turquoise
- List of permissible self-contained oxygen breathing apparatus, gas masks, and hose masks
- Milling methods and costs at the Montana mine concentrator of the Eagle-Picher Lead Co., Ruby, Ariz.
- Topaz
- Survey of cracking plants :January 1, 1931
- Explosions in Tennessee coal mines
- Magnesite
- Mining laws of the Dominican Republic
- Mining laws of Hungary
- Revision of the free energy of formation of sulphur dioxide
- Suggestions for wiring permissible equipment
- Progress in metal-mine ventilation in 1930
- Quartz and silica.
- Milling methods and costs at the Arthur and Magna concentrators of the Utah Copper Co.
- Significant features of wire-saw operation in Europe
- Milling methods and costs at the Verde Central concentrator, Jerome, Ariz.
- Opals
- A comment upon present-day applied geophysics
- Essential factors influencing subsidence and ground movement
- Milling practice of the Kirkland Lake Gold Mines (Ltd.), Kirkland Lake, Ontario
- Fatalities in Tennessee coal mines
- Factors involved in the heap leaching of copper ores
- Garnets (gem stones)
- Method and cost of quarrying limestone at the quarry of the Trinity Portland Cement Co., Fort Worth, Tex.
- Specially recommended trailing cables
- Twenty live reasons for first-aid training in California
- Emeralds
- Coal-Mine Fatalities in the United States, 1929
- Metal-Mine Accidents in the United States During the Calendar Year 1929
- Quarry Accidents in the United States During the Calendar Year 1929
- Mine ventilation in the Coeur d'Alene mining district
- Diatomite
- Mining methods and costs at the Spring Hill Mine, Montana Mines Corporation, Helena, Mont.
- Mining methods of the Bunker Hill and Sullivan Mining and Concentrating Co., Kellogg, Idaho
- Milling methods and costs at the Spring Hill Concentrator of the Montana Mines Corporation, Helena, Mont.
- Platinum
- Nitrogen and its compounds
- Hafnium
- Boron and its compounds
- Rhenium (and masurium)
- Zircon (the gem)
- Chalk, whiting, and whiting substitutes
- Petroleum Refinery Statistics: 1929
- Mining methods of the Ducktown Chemical & Iron Co., Mary Mine, Isabella, Tenn.
- Construction of the Wachusett-Coldbrook Tunnels
- How and why fatalities occurred in Pennsylvania bituminous-coal mines during the 5-year period, 1926-1930
- Safety inspections in and around iron mines in the Lake Superior district
- Safety standards and safety suggestions at iron mines in the Lake Superior region
- Mining methods of the molybdenum corporation of America at Questa, N. Mex.