---
kind: "section"
citation: "30 C.F.R. § 90.209"
title: "30"
number: "90.209"
heading: "Respirable dust samples; report to operator."
url: "https://uscodex.org/cfr/30/90.209"
---

# §90.209. Respirable dust samples; report to operator.

- (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 locations within 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;
  - (6) The reason for voiding any sample; and
  - (7) **The part 90 miner's MSHA Individual Identification Number (MIIN).**
- (b) Upon receipt, the operator shall provide a copy of this report to the [part 90](/cfr/30/part90.md) miner. The operator shall not post the original or a copy of this report on the mine bulletin board.
- (c) If using a CPDM, the person certified in sampling shall print, sign, and provide to each [part 90](/cfr/30/part90.md) miner, a paper record (Dust Data Card) of the sample run within one hour after the start of the [part 90](/cfr/30/part90.md) miner's next work shift. 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 location within the mine from which the sample was 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;
  - (5) The shift length; and
  - (6) **The part 90 miner's MSHA Individual Identification Number (MIIN).**
- (d) The operator shall not post data on respirable dust samples for [part 90](/cfr/30/part90.md) miners on the mine bulletin board.

## Notes

### Source

Source: 79 FR 24990, May 1, 2014, unless otherwise noted.

### Authority

Authority: 30 U.S.C. 811, 813(h), 957.

### Source

Source: 45 FR 80769, Dec. 5, 1980, unless otherwise noted.