Another object is to provide {HEAD ~ a process} wherein {TAIL ~ the equipment cost} is comparatively low 
wherein
Another object is to provide { HEAD ~ a process } wherein { TAIL ~ the equipment cost } is comparatively low
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH