Commercial Explosives Safety Training Vector Solutions Industrial 0:46 8 years ago 5 404 Далее Скачать
How NOT to use 1100kg/1,1Tons of Dynamite. Explosion gone wrong olegunnar1984 1:02 14 years ago 2 950 888 Далее Скачать
NAVFAC Safety Training Module 29: Blasting Naval Facilities Engineering Systems Command 9:23 8 years ago 1 168 Далее Скачать
NEC article 500 hazardous locations explained: defining the division system Eaton 8:53 2 years ago 7 180 Далее Скачать