A mobile concrete mixing unit has an aggregate bin divided into two compartments by a water tank provided within the aggregate bin. A hydraulic reservoir is provided within the water tank in order to cool the hydraulic fluid within the hydraulic reservoir and warm the water within the water tank. The water tank also helps to keep the aggregate warm and flowable when used in low temperatures. A lower portion of the water tank includes sides that slope inwardly so that aggregate within the bin can drop freely onto a conveyor belt without bridging between the water tank and the sidewalls of the aggregate bin.

Bleach dilution and delivery vehicles are enabled. For example, a method can comprise: transporting, using a bleach dilution and delivery vehicle, sodium hypochlorite from a first location to a second location, mixing, using the bleach dilution and delivery vehicle, water from the second location and sodium hypochlorite from the bleach dilution and delivery vehicle to a defined strength, resulting in a diluted mix, and dispensing, using the bleach dilution and delivery vehicle, the diluted mix to the second location.

Embodiments of the present disclosure a system for capturing proppant dust particles when positioned at a fracking operation site including a proppant delivery assembly to receive one or more containers having proppant stored therein. The system dispenses the proppant from the one or more containers and delivers the proppant to other fracking operation equipment. Moreover, the system includes a dust collection assembly positioned proximate and associated with the proppant delivery assembly to capture dust particles released by movement and settling of the proppant when being dispensed and delivered by the proppant delivery assembly. The dust collection assembly is positioned to direct an air flow in a flow path overlying the dust particles to capture the dust particles and move the dust particles away from the proppant thereby reducing risk of dust exposure to fracking operation site personnel.

A feed mixer truck for mixing feed and for discharging mixed feed into an elongated feed bunk. The engine of the truck is mechanically connected to three hydraulic pumps which are hydraulically connected to a hydraulic motor for driving the drive wheels of the truck, which are hydraulically connected to a hydraulic motor for operating the feed mixer augers, and which are hydraulically connected to a hydraulic motor which operates a feed discharge assembly. A control is electrically connected to the motors to control the operation thereof.

A mobile mixing apparatus for ensuring optimal mixing of a material includes a support member which is mobile on a support surface. A mixing drum is carried by the support member. The mixing drum has a base drum end, a side drum wall extending from the base drum end, an open drum end opposite the base drum end, a drum interior extending between the base drum end and the open drum end, a central inner surface and a base inner surface on the base drum end and a side inner surface on the side drum wall and facing the drum interior. A paddle assembly is disposed for rotation in the drum interior of the mixing drum. The paddle assembly includes a plurality of paddles engaging the central inner surface, the base inner surface and the side inner surface, respectively, of the mixing drum. At least one motor drivingly engages the paddle assembly for rotation in the drum interior of the mixing drum.

In accordance with one embodiment, a method is provided that includes providing a liquid nitrogen storage system configured to cool a supply of liquid nitrogen to a temperature below the vapor point of liquid nitrogen; coupling a piping system with the liquid nitrogen storage system to convey a portion of the supply of liquid nitrogen from the liquid nitrogen storage system; coupling the piping system with a liquid nitrogen control valve configured to control a flow of liquid nitrogen to at least one liquid nitrogen dispensing head; disposing the at least one liquid nitrogen dispensing head above a conveyance device operable to convey an aggregate stream of a concrete batching plant during use; and disposing the at least one liquid nitrogen dispensing head in a position to dispense an output flow of liquid nitrogen onto the aggregate stream of the concrete batching plant during use.

A feed-mixing wagon includes a container for receiving feed. The container includes a bottom, and a peripheral wall which is closed off at a bottom end by the bottom. A mixing element is provided for mixing the feed to be accommodated in the container. The peripheral wall is provided with a wall covering which extends at least along a bottom, ring-shaped part of the inner surface of the peripheral wall. The wall covering includes a plurality of wall plate parts with upwardly extending side edges. Two adjoining side edges of at least two respective adjoining wall plate parts are clamped to the inner surface of the peripheral wall by clamping strips which overlap these adjoining side edges and which are attached to the peripheral wall of the container by means of detachable fasteners.

Embodiments of the present disclosure a system for capturing proppant dust particles when positioned at a fracking operation site including a proppant delivery assembly to receive one or more containers having proppant stored therein. The system dispenses the proppant from the one or more containers and delivers the proppant to other fracking operation equipment. Moreover, the system includes a dust collection assembly positioned proximate and associated with the proppant delivery assembly to capture dust particles released by movement and settling of the proppant when being dispensed and delivered by the proppant delivery assembly. The dust collection assembly is positioned to direct an air flow in a flow path overlying the dust particles to capture the dust particles and move the dust particles away from the proppant thereby reducing risk of dust exposure to fracking operation site personnel.

Embodiments of the present disclosure a system for capturing proppant dust particles when positioned at a fracking operation site including a proppant delivery assembly to receive one or more containers having proppant stored therein. The system dispenses the proppant from the one or more containers and delivers the proppant to other fracking operation equipment. Moreover, the system includes a dust collection assembly positioned proximate and associated with the proppant delivery assembly to capture dust particles released by movement and settling of the proppant when being dispensed and delivered by the proppant delivery assembly. The dust collection assembly is positioned to direct an air flow in a flow path overlying the dust particles to capture the dust particles and move the dust particles away from the proppant thereby reducing risk of dust exposure to fracking operation site personnel.

Embodiments of the present disclosure a system for capturing proppant dust particles when positioned at a fracking operation site including a proppant delivery assembly to receive one or more containers having proppant stored therein. The system dispenses the proppant from the one or more containers and delivers the proppant to other fracking operation equipment. Moreover, the system includes a dust collection assembly positioned proximate and associated with the proppant delivery assembly to capture dust particles released by movement and settling of the proppant when being dispensed and delivered by the proppant delivery assembly. The dust collection assembly is positioned to direct an air flow in a flow path overlying the dust particles to capture the dust particles and move the dust particles away from the proppant thereby reducing risk of dust exposure to fracking operation site personnel.