▁le at ▁or ▁la de ▁was ▁critical ▁to ▁the ▁efficient ▁working ▁of ▁the ▁mill ▁and ▁was ▁a ▁special ised ▁craft ; ▁a ▁le at w right ▁is ▁recorded ▁on ▁a ▁grave ▁in ▁the ▁L oud oun ▁Kirk ▁gra vey ard ▁near ▁Gal ston , ▁East ▁A yr shire . ▁ ▁The ▁we ir ▁on ▁the ▁River ▁Gar no ck ▁is ▁made ▁of ▁b ould ers ▁which ▁are ▁carefully ▁placed ▁and ▁locked ▁together ▁creating ▁a ▁mill pond ▁that ▁supplies ▁a ▁good ▁head ▁of ▁water ▁to ▁the ▁wheel ▁through ▁the ▁la de . ▁The ▁we ir ▁was ▁built ▁on ▁a ▁natural ▁dy ke ▁which ▁runs ▁across ▁the ▁Gar no ck ▁at ▁this ▁point , ▁its ▁existence ▁being ▁carefully ▁explo ited ▁by ▁the ▁mon ks ▁of ▁Kil win ning ▁Ab bey ▁who ▁chose ▁the ▁site ▁for ▁the ▁mill . ▁These ▁dy kes ▁( b ands ▁of ▁especially ▁hard ▁rock ) ▁are ▁found ▁at ▁several ▁points ▁crossing ▁the ▁river ▁and ▁many ▁were ▁elsewhere ▁were ▁explo ited ▁as ▁the ▁bases ▁for ▁d ams , ▁such ▁as ▁also ▁occurred ▁at ▁C unning ham head ▁Mill ▁on ▁the ▁River ▁Ann ick . ▁ ▁A ▁feature ▁of ▁many ▁mill s ▁was ▁the ▁presence ▁of ▁trees ▁or ▁other ▁structures ▁sh ading ▁the ▁wheel ▁from ▁the ▁inten se ▁summer ▁sun . ▁The ▁reason ▁for ▁this ▁was ▁that ▁when ▁the ▁wheel ▁was ▁not ▁turning ▁the ▁wood ▁components ▁d ried ▁out ▁and ▁war ped , ▁putting ▁a ▁great ▁deal ▁of ▁stress ▁on ▁the ▁whole ▁structure , ▁putting ▁it ▁out ▁of ▁shape ▁and ▁creating ▁breaks ▁in