On Saturday, January 23, 2016 at 9:04:09 AM UTC-6, Stormin Mormon wrote:

I don't remember the numbers, but I helped take out
one of those. Had probably 500 pounds of sand on top,
which all had to come out by dust pan, bucket, and
carried up the stairs. We did a LOT of sheet metal
work on that job. The customer's gas bill dropped a
LOT, enough to pay for the furnace quite rapidly.

Did you wear an approved respirator for that job? (Š™_—Ž)