Subpart D—Quality Control

Sections

• 28.30
  § 28.30 Quality control plans; filing requirements.
• 28.31
  § 28.31 Quality control plans; contents.
• 28.32
  § 28.32 Proposed quality control plans; approval by MSHA.
• 28.33
  § 28.33 Quality control test methods, equipment, and records; review by MSHA; revocation of approval.