to its exposed exterior side surfaces are suitable for bales in which the waste material is layered to be parallel to the bale side surfaces however other bales have the waste material layered to be normal to the bale exterior side surfaces so that the direction of the injection jets from the described embodiments would be parallel to the bale layers thereby penetrating completely through the bale to exit from the other side with little dimunition in velocity and saturation of the waste material in the bale for this type of bale in which the layers are perpendicular to the bale 39 s side surfaces a modification of the nozzle assembly embodiment of fig8 and 9 is illustrated in fig1 and 11 as will direct the jets obliquely of the exterior bale side surfaces and the individual layers of waste material within the bale in a manner to establish a component of the jet velocity normal to the waste material layers the nozzle assembly 49 of this embodiment includes an assembly shaft 49a of which the rear end is fitted to a spur gear 50 gear teeth not illustrated in contact with the gear teeth of a drive shaft 51 teeth not illustrated and in which the gear ratios are such that one rotation of the drive shaft rotates the spur gear 51 and the nozzle assembly one eighth of a revolution a feed band 52 extends circumferentially of the central portion of the nozzle shaft 49a between a pair of sealing rings 53 on either side and eight nozzle units 54 comprising individual nozzle units 54a 54b 54c 54d 54e 54f 54g 54h arranged in a circumferential array to protrude forwardly of the nozzle assembly shaft 49a as best seen in fig1 opposite circumferentially located.