Vermiculite is a kind of blow in attic insulation that contains asbestos and was widely used before 1980.
It weighs very little and characteristically has small gold colored flakes in it.
Removal for vermiculite consists of sealing the attic off from the rest of the house using plastic sheeting, putting the area under negative pressure, and keeping the air in containment moist to prevent dust.
Removal of the vermiculite is done by hand shoveling the insulation into asbestos bags, or by using a large vacuum apparatus which puts the vermiculite directly into asbestos bags.
After removal, the area is encapsulated using a spray encapsulant which prevents any remaining fibers from becoming air born, making the area safe to re-insulate.