Closure bag for shot-holes

Claim 1

A BAG FOR CLOSING SHOT-HOLES IN MINING OPERATIONS, SAID BAG COMPRISING AN ELONGATED TUBULAR MEMBER OF GENERALLY RECTIAINEAR PERIPHERAL ORIGINAL SHAPE AND BEING RELATIVELY LONG IN ITS LENGTHWISE DIMENSION AND RELATIVELY NARROW IN ITS TRANSCERSE DIMENSION, SAID BAG BEING FORMED OF A FLEXIBLE THERMOPLASTIC MATERIAL, SAID TUBULAR MEMBER BEING ENTIRELY CLOSED ACROSS ONE NARROW END AND PROVIDED AT THE OTHER END WITH A MOUTH THROUGH WHICH A NON-COMPRESSIBLE FILLING MEDIUM MAY BE CHARGED INTO THE BAG, SAID MOUTH EXTENDING SUBSTANTIALLY ENTIRELY ACROSS THE OTHER TRANSVERSE END, AND VALVE MEANS OPERATIVELY DISPOSED ACROSS SAID MOUTH FOR RETAINING THE FILLING MEDIUM WITHIN THE BAG WHENEVER IT IS CHARGED THEREINTO, SAID VALVE MEANS CONSISTING OF TWO NORMALLY FLAT FACEWISE OVERLYING PLIES OF FLEXIBLE THEREMOPLASTIC MATERIAL JOINED TOGETHER ALONG THEIR LONGITUDINAL MARGINS IN THE FORMATION OF A SHORT TUBE HAVING SUSSTANTIALLY THE SAME TRANSVERSE WIDTH AS THE TUBULAR MEMBER BUT BEING SUBSTANTIALLY SHORTER THAN SAID TUBULAR MEMBER, SAID PLIES BEING SEALED ALONG SAID LONGITUDINAL MARGINS TO THE LONGITUDINAL MARGINS OF THE TUBULAR MEMBER IN THE FORM OF COMMON SIDE-SEMAS, SAID PLIES ALSO BEING PROVIDED INTERIORLY OF THEIR LONGITUDINAL MARGINS WITH SPACED INTERMEDIATE SEAMS DEFINING A LONGITUDINAL PASSAGEWAY ESTABLISHING COMMUNICATION BETWEEN SAID MOUTH AND THE INTERIOR OF THE TUBULAR MEMBER, THE PORTIONS OF THE PLIES BETWEEN THE RESPECTIVE SIDE-SEAMS AND THE PROXIMATE INTERMEDIATE SEAM FORMING RETENTION WEBS WHEREBY THE PASSAGEWAY IS HELD IN OPERATIVE POSITION.