Working on a house built about 1967. Attic insulation is a blown-in mineral wool. I know it is original to the house. In some of the work at this time, the insulation is gathered into a bucket and then poured back out. Compressed a bit, unfortunately. The cellulose available is tightly baled and renting a blower for installing just part of a bag is not practical. How to fluff up limited amounts of the cellulose? By hand does not yield good results.