Abstract: An apparatus for carrying articles on one's back having a bottom and upstanding wall for resting against the back of the user with cooperating strapping systems overlying each other and extending between the bottom and upstanding wall for retaining the articles within the confines of the straps and a transparent sheet protector for overlying the contents to protect the contents from inclement weather.

Abstract: A detonating energy transmittal device is provided which, when combined with even relatively low-power blasting caps, is capable of promoting and initiating the explosive detonation of liquid nitromethane, which device comprises a plurality of layers of foam material, an effective amount of frangible articles carried on at least one surface of the foam material layers and forming thereon a substantially continuous layer intermediate the adjacent foam material layer, and a cavity capable of accommodating a blasting cap and of placing said blasting cap in intimate contact with said plurality of foam material layers. Methods for detonating fluid explosives also are provided.