Subject
- Dye industry5
- Dynamite1
- E. Merck (Firm)1
- E.I. du Pont de Nemours & Company1
- Explosives industry3
- Fertilizers1
- Fluosilicates1
- Friedrich Bayer & Co.3
- General Electric Company1
- Glass manufacture1
- Harrison Bros. & Co.1
- House painting2
- House painting--Equipment and supplies2
- Hugo Stinnes-Riebeck Montan und Oelwerke3
- Hydrochloric acid2
- Mineral industries3
- Mines and mineral resources1
- Nobel, Alfred Bernhard, 1833-18961
- Oil industry workers3
- Oil-shale industry3