Superphosphate manufacturing plant

Claim 1

IN A SUPERPHOSPHATE MANUFACTURING PLANT, A BUILDING HOUSING THE ESSENTIAL ELEMENTS OF THE PLANT INCLUDING A DEN, APPARATUS FOR DELIVERING ACIDULATED PHOSPHATE ROCK MATERIAL TO THE DEN, AND STORAGE SPACE FOR THE SUPERPHOSPHATE END PRODUCT, THE WIDTH OF SAID BUILDING BEING SUBSTANTIALLY SUCH AS TO ACCOMMODATE BETWEEN THE SIDE WALLS THEREOF THE BASE OF A PILE OF THE SUPERPHOSPHATE END PRODUCT WHICH AT NORMAL ANGLE OF REPOSE WILL EXTEND WELL TOWARD THE TOP OF THE BUILDING, A TRACK EXTNEDING ALONG ONE SIDE WALL IN AN ELEVATED POSITION WELL BELOW THE LEVEL OF THE TOP OF SAID PILE BUT CLEAR OF THE INCLINED SIDE OF THE LATTER, AND A MOBILE BOOM CRANE MOUNTED FOR TRAVEL ON SAID TRACK AND HAVING AN EFFECTIVE OPERATIONAL RANGE EMBRACING BOTH THE DEN AND STORAGE AREAS, SAID CRANE BEING THEREBY OPERATIVE TO BUILD SAID PILE, BY TRANSFER OF THE SUPERPHOSPHATE PRODUCT FROM THE DEN TO THE STORAGE AREA, AND TO RECLAIM FROM THE PILE SUBSTANTIALLY ALL OF SAID PRODUCT.