active activities apology broken communicating communication equipment inconvenient information informing limitations limited limits message not-working out-of-order safety sign sorry to-be-fixed unfortunate unusable unworkable useless warning wording bulk bulky commercial compactable compacting compaction compactor compression contain container containment crusher crushing-power damage dirty discoloration discolouration environmental horizontal large loader loading machine machinery metal power powerful processing processor range recycling rust rusting rusty safe Sanitary soft-waste space stationary storage surface technology trash used volume-reduction waste waste-materials working-order