Florida Phosphate Mines
Pollution, George Glasser's website on Florida phosphate mining and
Death in the Air: Phosphoric Acid Production and
Airborne Fluorides, George Glasser
Death in the Air: Air Pollution from Phosphate
Fertilizer Production, George Glasser
Phosphate Mining in Jordan, Dan Montgomery, October
Phosphate Mining in Morocco, Edward G. Robles, Jr.