Atlas Copco introduces a range of silenced light rock drills for underground applications. A modified rock drill has passed the ATEX process and now fully complies to ATEX directive. Two versions of a new heavy-duty stoper are introduced. Read the full press release here: http://www.atlascopco.ca/caus/news/productnews/100423_new_light_underground_rock_drills_from_atlas_copco_—_20100406_12_13.asp