§ 71.208 Respirable dust samples; report to operator; posting.

(a) MSHA shall provide the operator, as soon as practicable, a report with the following data on respirable dust samples submitted or whose results were transmitted electronically, if using a CPDM, in accordance with this part: (1) The mine identification number; (2) The DWP at the mine from which the samples were taken; (3) The concentration of respirable dust, expressed as an equivalent concentration for each valid sample; (4) The average equivalent concentration of respirable dust for all valid samples; (5) The occupation code; and (6) The reason for voiding any sample. (b) Upon receipt, the operator shall post this data for at least 31 days on the mine bulletin board. (c) If using a CPDM, the person certified in sampling shall, within 12 hours after the end of each sampling shift, print, sign, and post on the mine bulletin board a paper record (Dust Data Card) of each sample run. This hard-copy record shall include the data entered when the sample run was first programmed, and the following: (1) The mine identification number; (2) The DWP at the mine from which the samples were taken; (3) The concentration of respirable dust, expressed as an equivalent concentration reported and stored for each sample; (4) The sampling status conditions encountered for each sample; and (5) The shift length. (d) The information required by paragraph (c) of this section shall remain posted until receipt of the MSHA report covering these respirable dust samples.