Current through Register Vol. XLI, No. 24, June 14, 2024
Section 56-17-6 - Coal Dust Sample Analysis6.1. Each coal dust sample shall be analyzed utilizing a thermogravimetric analysis procedure which allows for the determination of coal dust and rock dust ratios.6.2. Details concerning the thermogravimetric analysis procedure shall be published in the OMHST coal-dust practices survey program.6.3. A quality control process consisting of internal duplicate samples and duplicates sent to outside laboratories shall be established to ensure the accuracy of the analysis.6.4. Samples received from the surveyor shall become the responsibility of the authorized laboratory technician who shall complete the chain of custody portion of the OMHST Mine Dust Sample Bag and maintain the samples in a secure manner until notified by the Director that they are no longer required.