§ 29.60 - Minimum performance requirements.

Related Notices
- 94-29121. Proposed rule. 94-29121. Testing and Evaluation by Nationally Recognized Testing Laboratories and Use of Equivalent Testing and Evaluation Requirements; Proposed Rule DEPARTMENT OF LABOR

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(a) Portable coal dust/rock dust analyzers shall be self-contained units, practical in operation, portable, and suitable for service in underground coal mines.

(b) The analyzer shall be equipped with a quantitative indicating device that is capable of indicating the incombustible content of coal mine dusts over the range of from 50 percent to 100 percent incombustible.

(c) Analyzers equipped with batteries shall be constructed so that when such batteries are filled, electrolyte will not spill during use.

(d) Battery containers shall be made of corrosion resistant material.

                    
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