tension of the detonating cord on fasteners 3 fig2 illustrates one possible mode of release of the fastener during deployment in which one of the fasteners 3 has torn through the end of tubing 4 where the fastener was attached for example tearing through hole 15 it is alternatively possible to attach fastener 3 loosely enough so that the detonating cord slips through the fastener thus fastener 3 may alternatively be any of a variety of attachment devices such as a clamp string rubber band or adhesive the attachment device may be placed outside or inside tubing 4 and the holes 15 shown in fig1 represent only one embodiment of the invention and are not necessary tubing 4 may be any tubing with sufficient tensile strength to maintain the sinuous shape of the detonating cord during processing packaging and handling generally tubing 4 will be a thin walled flexible plastic tubing a lay flat tubing which is already creased may be used or the tubing may be round flexibility of the tubing particularly to allow flattening is desirable as the packaging of the line charge apparatus may be achieved by flattening and folding the fabric sleeve between the explosive charges most plastics are suitable for the plastic tubing including polyethylene polypropylene polyester such as mylar u00ae polytetrafluoroethylene such as teflon u00ae.