30 C.F.R. § 56.6307 Drill stem loading.
Title 30 - Mineral Resources
Explosive material shall not be loaded into blastholes with drill stem equipment or other devices that could be extracted while containing explosive material. The use of loading hose, collar sleeves, or collar pipes is permitted.
Title 30: Mineral Resources
PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES
Subpart E—Explosives
Use
§ 56.6307 Drill stem loading.

