haha....
I am not DIYing it. but I need more info to get the project start. Actually we 're a small company which try to make the brightest headlamp in the world so that it can benefit to every industries.
Thanks for virtualground giving me the website for reference.
However , if what I made is not for selling in USA, say, south Africa, does it still need a MSHA approval?
It seems that every country has its own mining regulatory dept and laws to obey, right?