POWERTRAINANDDRIVEANDSCRAPERCONVEYORSIMILARTOARAMPOFITSFUSELAGEANDASECTIONOFTHEARCHBRIDGESTRUCTUREANDBELTCONVEYORSINTHETAILPARAGRAPHABOVELAPINTHEBACKALLEYINTHECOALFACEWHENTHEMACHINEGOESTOREPRINTITSARCHBRIDGEANDALLOFTHEAIRCRAFTENDEDTHELAPBELTCONVEYORSTACKOFPOSITIONLIMITS,ARETRACTABLEBELTCONVEYORSHORTENEDRIDENEXTLENGTHOFTHE...