working in a nuke plant, which is basically a concrete cave, you do not go into containment or anywhere for that matter without head lamp on your hard hat, we use petzl and Streamlight. the petzel is a nice soft yet bright flood, that i use day to day, and when im doing a weld i use the streamlight attached to my welding hood with velcro, to light up the work area so i can see it through my autodarkening hood, and a Streamlight tac2 for weld inspection. not the brightest lights out there, but they are very solid and very very reliable.
