Distance from explosives magazine to work area?

There are too many variables here to give you a simple number. The first is the amount and type of explosive, the type of magazine, it's location, and the nature of the work performed. The next major component would be the regulations governing this storage area- we get questions from every US state, several other nations, and miitary users. It may vary between OSHA and MSHA, between Corps of Engineers, Australia and Canada, surface or underground, and so on. You are welcome to contact me through my message board with additional specifics, and we'll try to help you. Sorry-