C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER O—COAL MINE SAFETY AND HEALTH › PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES › Subpart C—Roof Support

30 C.F.R. § 75.203

Mining methods

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(a) The method of mining shall not expose any person to hazards caused by excessive widths of rooms, crosscuts and entries, or faulty pillar recovery methods. Pillar dimensions shall be compatible with effective control of the roof, face and ribs and coal or rock bursts.

(b) A sightline or other method of directional control shall be used to maintain the projected direction of mining in entries, rooms, crosscuts and pillar splits.

(c) A sidecut shall be started only from an area that is supported in accordance with the roof control plan.

(d) A working face shall not be mined through into an unsupported area of active workings, except when the unsupported area is inaccessible.

(e) Additional roof support shall be installed where—

(1) The width of the opening specified in the roof control plan is exceeded by more than 12 inches; and

(2) The distance over which the excessive width exists is more than 5 feet.

Notes of Decisions
Cited in 2 cases, 1996–1996 · leading case: Miller v. City Hosp., Inc., 475 S.E.2d 495 (W. Va. 1996).
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Miller v. City Hosp., Inc., 475 S.E.2d 495 (W. Va. 1996). “2d at 327 (“employer was cited by MSHA for this incident of violating what is now designated as 30 C.F.R. § 75.203 (a) (1990)). (Footnote omitted.”
Shaffer v. J H Fletcher & Co (4th Cir. 1996). “The infractions included (1) mining through and into an unsupported area of a crosscut, (2) allowing the bolting machine's automated temporary roof support system to be engaged more than five feet from another support, and (3) exceeding the cutting depth specified by the…”
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