(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. (1) The mine identification number;
2. (2) The DWP at the mine from which the samples were taken;
3. (3) The concentration of respirable dust, expressed as an equivalent concentration for each valid sample;
4. (4) The average equivalent concentration of respirable dust for all valid samples;
5. (5) The occupation code; and
6. (6) The reason for voiding any sample.

(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. (1) The mine identification number;
2. (2) The DWP at the mine from which the samples were taken;
3. (3) The concentration of respirable dust, expressed as an equivalent concentration reported and stored for each sample;
4. (4) The sampling status conditions encountered for each sample; and
5. (5) The shift length.