1592953951000 1312632483000 term-79620 1616541400514 1312632577000 1616290423569 adlib fitz-online adlib-term-79620 a956e116-e1e4-3b2e-bb0e-feb65ff7227f 2 1 scope note Pneumatically powered mechanisms using percussion to penetrate rock. MEANS reference term-79617 adlib-term-79617 b5bf1455-f1b2-361f-a584-c22a10d6a0bc hammer drill V.TH.AFU.BIQ.BOK.BCW.ALO 1 code V.TH.AFU.BIQ.BOK.BCW.ALO 1 hammer drills reference term-79621 adlib-term-79621 c88e4b02-63f4-32ce-9c14-c281a92df580 <drills: stone and masonry working equipment> hammer drills term