More Core in the Box: Drillers find Longyear™ Bits Considerably More Effective
Overview Many of the most important gold sites in the world are associated with Archean greenstone, the oldest rock on earth and thought to have formed at the bottom of the sea. Subsequent geological events created the structure in the greenstone by which hydrothermal activity concentrated and deposited gold. 60% Increase in Life, and 8% […]
Lifting Dog Tired? Pointy Issue Resolved with New Overshot
BOART LONGYEAR’S NEW OVERSHOT RESOLVING POINTY ISSUES Since Boart Longyear introduced the Q™ Wireline system in 1966, retrieving the inner tube from the core barrel has been handled the same way: an overshot with lifting dogs (spring loaded hooked “fingers”) is lowered or pumped into the hole until it snaps over a pivoting spearhead mechanism […]