---
kind: "section"
citation: "30 C.F.R. § 75.389"
title: "30"
number: "75.389"
heading: "Mining into inaccessible areas."
url: "https://uscodex.org/cfr/30/75.389"
---

# §75.389. Mining into inaccessible areas.

- (a)
  - (1) The operator shall develop and follow a plan for mining into areas penetrated by boreholes drilled under [§ 75.388](/cfr/30/75.388.md).
  - (2) Mining shall not resume into any area penetrated by boreholes until conditions in the penetrated area can be determined under [§ 75.388](/cfr/30/75.388.md) and the plan for mining-through into the area has been approved by the district manager.
  - (3) A copy of the procedures to be followed shall be posted near the site of the mining-through operations and the operator shall explain these procedures to all miners involved in the operations.
- (b) The procedures specified in the plan shall include—
  - (1) The method of ventilation, ventilation controls, and the air quantities and velocities in the affected working section and working place;
  - (2) Dewatering procedures to be used if a penetrated area contains a water accumulation; and
  - (3) **The procedures and precautions to be followed during mining-through operations.**
- (c) Except for routine mining-through operations that are part of a retreat section ventilation system approved in accordance with § [75.371(f)](/cfr/30/75.371.md?p=f) and [(x)](/cfr/30/75.371.md?p=x), the following provisions shall apply:
  - (1) Before and during mining-through operations, a certified person shall perform air quality tests at intervals and at locations necessary to protect the safety of the miners.
  - (2) During mining-through operations, only persons involved in these operations shall be permitted in the mine; and
  - (3) After mining-through, a certified person shall determine that the affected areas are safe before any persons enter the underground areas of the mine.

## Notes

### Authority

Authority: 30 U.S.C. 811, 863.

### Source

Source: 61 FR 9829, Mar. 11, 1996, unless otherwise noted.

### Authority

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

### Source

Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.