GroundRules
30 CFR 33.31: Test space.
Where this section sits in the code
- Title 30—Mineral Resources
- CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
- SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS
- PART 33—DUST COLLECTORS FOR USE IN CONNECTION WITH ROCK DRILLING IN COAL MINES
- Subpart C—Test Requirements
(a) Drilling tests shall be conducted in a test space formed by two curtains suspended across a mine opening in such a manner that the volume of the test space shall be approximately 2,000 cubic feet.
(b) No mechanical ventilation shall be provided in the test space during a drilling test, except such air movement as may be induced by operation of drilling- or dust-collecting equipment.
(c) All parts of a unit or system shall be within the test space during a drilling test.
Collected 2026-08-27T02:25:24Z. Source file · JSON