In placing the steel T posts in the channel 14, {HEAD ~ a post driver}, which is typically a cylinder with an integral cap, is driven against the steel posts and rams {TAIL ~ the steel posts} into the channel bed 20 
rams
In placing the steel T posts in the channel 14 , { HEAD ~ a post driver } , which is typically a cylinder with an integral cap , is driven against the steel posts and rams { TAIL ~ the steel posts } into the channel bed 20
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH