What was Vincent Van Gogh's first jobs involving coal mining?

He was in fact a missionary to the mining community. He studied theology and became a minister of religion, having failed as a teacher and a bookseller. This link explains more. a href="http://cvc.csusb.edu/VincentVanGogh.htm" rel="nofollow"http://cvc.csusb.edu/VincentVanGogh.htm/a