Sentence:  Polish Joe was a <WSD>bogger</WSD>, a man who shifted unbelievable quantities of dirt away from the face from which it had been blown, and into trucks for dumping in the underground bins each day. 
Meaning of the word marked with <WSD> tags:  Someone who works to shovel ore or waste rock underground.<ref name="JHughes"> [http://books.google.com/books?id=B7tZAAAAMAAJ&q=bogger&dq=bogger&lr=&pgis=1 “bogger”], entry in '''1989''', Joan Hughes, "Australian words and their origins".</ref>