Booster for relatively insensitive explosives

Patent · Tue Jun 05 04:00:00 EDT 1962

OSTI ID:5505896

Cook, M A; Farnam, H E; Malstrom, S D; Peterson, W H

Insensitive explosives, containing a high percentage of ammonium nitrate (NHD4UNOD3U) and containing nonexplosive organic sensitizers, have found wide application as blasting explosives. Prilled NHD4UNOD3U containing 94% NHD4UNOD3U and 6% fuel oil, and aqueous slurries of TNT-NHD4UNOD3U are examples of such insensitive explosives. The compositions are not detonable by blasting caps and prior art methods for detonating them include the use of dynamite or large quantities of fine-grained TNT primers. These methods are expensive, and very sensitive to heat and shock. This invention provides a booster for insensitive explosives which is consistently detonable by minimum content Primacord; which will be consistent in the wet or dry state; which will be inexpensive; and which is much less sensitive to heat, shock, impact, friction, and other influences causing accidental initiation. The booster comprises a compact core of Primacord-sensitive material, surrounded by a sheath of Primacord-insensitive material of high brisance, which is threaded on a Primacord fuse, lowered into the hole, and fired electrically.

• Assignee: Intermountain Res. and Eng. Co., Inc.
• Patent Number(s): US 3037452
• OSTI ID: 5505896
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
BOREHOLES
CAVITIES
CHEMICAL EXPLOSIVES
COMMINUTION
DRILLING
EXPLOSIONS
EXPLOSIVE FRACTURING
EXPLOSIVE STIMULATION
EXPLOSIVES
FRACTURING
SAFETY
SENSITIVITY
STIMULATION
UNDERGROUND EXPLOSIONS
WELL COMPLETION
WELL DRILLING
WELL STIMULATION