anks , ▁and ▁set ▁buildings ▁on ▁fire . ▁ ▁The ▁project ▁was ▁delayed ▁a ▁year , ▁and ▁the ▁direct ▁cost ▁of ▁the ▁damage ▁estimated ▁at ▁$ 2 ▁million ▁C AD . ▁The ▁causes ▁were ▁not ▁clear , ▁but ▁three ▁possible ▁factors ▁have ▁been ▁c ited : ▁inter - union ▁rival ry , ▁poor ▁working ▁conditions , ▁and ▁the ▁perce ived ▁ar rog ance ▁of ▁American ▁execut ives ▁of ▁the ▁contract or , ▁Be cht el ▁Corporation . ▁ ▁As ▁environmental ▁action ▁▁ ▁C ertain ▁groups ▁turn ▁to ▁destruction ▁of ▁property ▁to ▁stop ▁environmental ▁destruction ▁or ▁to ▁make ▁visible ▁arguments ▁against ▁forms ▁of ▁modern ▁technology ▁they ▁consider ▁det r iment al ▁to ▁the ▁environment . ▁The ▁U . S . ▁Federal ▁Bureau ▁of ▁Investig ation ▁( F BI ) ▁and ▁other ▁law ▁enfor cement ▁ag encies ▁use ▁the ▁term ▁e co - ter ror ist ▁when ▁applied ▁to ▁damage ▁of ▁property . ▁Pro ponents ▁argue ▁that ▁since ▁property ▁cannot ▁feel ▁terror , ▁damage ▁to ▁property ▁is ▁more ▁accur ately ▁described ▁as ▁sab ot age . ▁O pp on ents , ▁by ▁contrast , ▁point ▁out ▁that ▁property ▁own ers ▁and ▁operators ▁can ▁indeed ▁feel ▁terror . ▁The ▁image ▁of ▁the ▁mon key ▁w rench ▁thrown ▁into ▁the ▁moving ▁parts ▁of ▁a ▁machine ▁to ▁stop ▁it ▁from ▁working ▁was ▁popular ized ▁by ▁Edward ▁Ab bey ▁in ▁the ▁novel ▁The ▁Mon key ▁W rench ▁Gang ▁and ▁has ▁been ▁adopted ▁by ▁e co - activ ists ▁to ▁describe ▁destruction ▁of ▁earth ▁dam aging ▁mach in ery .