| http://www.w3.org/ns/prov#value | - Since this insulation is within cans, it may be of a very low-cost type -- optionally treated with wood or other preservative -- for examples: nut, cotton-seed or other seed hulls; sand; cinders; ashes; sawdust; tan bark; bits of pine bark such as are sold for plant mulch; light-weight topsoil or other dust; or bits of foamed-plastic scrap.
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