Sentence:  In some big single-board sheds, where pickers-up and <WSD>broomies</WSD> have to dodge shearers who are continually crossing the board, plenty of space is necessary, and the board should not be less than 10 feet wide. 
Meaning of the word marked with <WSD> tags:  A person who sweeps the floor and possibly does other menial tasks in a shearing shed.