The 250G PRIMER SPIDER is an underground mining spider designed to hold a 250-gram cylindrical booster. It securely supports and centers the booster and detonator, while protecting the initiation cord from damage that could lead to leakage or misfire.
Its design allows for easy installation of the primed booster and is robust enough to maintain charge stability throughout the loading process. The base attaches securely to the end of the charging hose.
The 250G PRIMER SPIDER is compatible with shotgun loading methods, ensuring the booster remains correctly positioned and centered within the explosive column.
Specification / Detail
Designed for boreholes with diameters ranging from 64–115 mm, the unit is equipped with a protective plastic housing that safeguards the booster and detonator initiation cord from potential damage.
Unit of Measure: Box (90 pcs)
Material of Construction: Polypropylene
Supported Boosters: NITRO SIBIR MAXPRIME 250G, UPHOLE MAXAM RIOBOOST 250G, DYNO NOBEL TROJAN SPARTAN 200G, AUSTIN BROWN CAP
