Current through Register Vol. XLI, No. 19, May 10, 2024
Section 56-17-4 - Use of Moisture Control Coal Dust4.1. A location in a mine shall be considered too wet for evaluation of rock dust standards when the mine dust present in the mine, operating section, haulageway, conveyor, or back entry contains in excess of thirty (30) percent moisture.4.2. It is permissible to gauge a too wet condition in a mine by taking the top one eighth (1/8) inch of mine dust and reasonably squeezing said dust in the hand. If liquid flows between the fingers upon exerting reasonable pressure or a wet residue is left in the hand as a result, then the moisture content shall be considered too wet. If no liquid flows between the fingers upon exerting reasonable pressure and no wet residue is left in the hand, then the moisture content is not sufficient. A visual observation without testing in the above described manner is not sufficient.