ERM and WipWare, with the cooperation of Bluegrass Materials Company, plan to conduct fragmentation analysis of a muck pile this summer using images obtained with unmanned aircraft systems (UAS). Obtaining suitable images of muck piles for fragmentation analysis can be very challenging because the proper camera perspective is difficult or even impossible to obtain. Continue reading
The Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) recently published a notice of proposed rulemaking (NPRM) to remove the reference to an outdated guidance document in an explanatory note following the table of separation distances (TSD) of ammonium nitrate (AN) and blasting agents from explosives or blasting agents. ATF also proposed amending that note to clarify that those separation distance requirements apply to all AN.