Sec. 24.06. All rock dust used shall meet the following specifications:.
62 words·~1 min read·
/il/chapter-225/act-705/24-06A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Sec. 24.06. All rock dust used shall meet the following specifications:
1. All of the dust shall pass through a 20 mesh sieve, and at least 70% shall pass through a 200 mesh sieve.
2. The dust shall not contain more than 5% combustible matter, nor more than 5% free silica. The rock dust should be as light in color as possible.