Wedgefield, following the delivery of Roy Hill's 1196 new GA type CCK138 model waggons, they were stored in several site whilst awaiting for enough track to be laid to allow delivery onto rail. GA2144 end view showing the F type coupler, hose and electrical connection and uncoupling lever, only the even numbered waggons, or control waggon, has an uncoupling lever, the odd numbered, or slave waggons do not. March 14. 2015.