The professionalism from the supervisor was not there. When working on the burner for dry grain at plant shut down. Air monitors where alarming and we were ordered to go back in and get the work done. On the same task we were asking about were to ty off for our safety harness. Supervisor snaped quit being a baby we need the harness on if we have to pull you out. Having no ware to ty off. On another job with new construction, you can't use machinery to put cross braces weighing ruff easement 500 lb. 19ft tall we had to manhandle, to an upright position. I told the supervisor the conveyer was 4ft to long two months before. I was told I was measuring wrong. When we got it up the dry grain would miss the trailers. They then had to make another shoot to kick the grain back 4ft in order to load the trucks.