NEWS! ROCKMA Drilling has drilled the deepest exploration hole.
ROCKMA Drilling, drilled an exploration hole for Zinkgruvan Mining, with a drill depth of 2752.3 meters. We believe this is the deepest exploration hole drilled in Scandinavia, ever.
The drilling was performed with a Boart Longyear core drill machine.
The drill hole was completed September 15th, 2019