SILICA CONTENT OF DUST FROM TANK RANGES
Abstract
In the Fort Knox tank training areas analyses have been made of surface soil and air-borne dust in tanks on maneuvers. The results are: (1) surface soil samples from two distant tank ranges have a high concentration of silica with an average of 74.3% total silica and 63.9% free silica; (2) the air-borne dust within tanks from the same two tank ranges contains an average of 21.5% by weight of particles below an equivalent diameter of three (3) microns; (3) of the particles of air-borne dust less than three (3) microns in diameter, 10% is free silica; (4) these particles of free silica less than three (3) microns in diameter constitute 2.2% by weight of the total dust. The question is raised whether such a concentration of highly siliceous dust, especially in the dangerous sizes less than ten (10) microns or three (3) microns in diameter, constitutes a medical hazard to operating armored personnel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 14, 1947
- Accession Number
- AD0806393
Entities
People
- C. A. Kruse
- D. J. Howe
- Patrick H. Carey
Organizations
- United States Army Medical Research Laboratory