a rigid unyielding inclined surface projecting into {TAIL ~ said storage space} and extending downwardly and laterally inwardly with respect to {HEAD ~ said storage space}, 
a rigid unyielding inclined surface projecting into { TAIL ~ said storage space } and extending downwardly and laterally inwardly with respect to { HEAD ~ said storage space } ,
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH