Systems and methods for processing earthen slurries such as slurries of earth cuttings and, in particular, systems and methods that involve two separation units for dewatering the slurry or that involve additive mixing units are disclosed. The systems and methods may include a conveyor such as a drag-slat conveyor that removes slurry from a holding tank at which the material is dumped and toward the separation units to allow the material to be continuously processed and dumped into the holding tank.

An access control device for controlling access to a tank defining a storage chamber and access to the storage chamber; the device includes at least one cap and an external apparatus; the cap includes a closure body defining a closed position and an open position; a housing defining a housing volume for the closure body and a reciprocal rotation with respect to the closure body; a connection to connect the closure body to the housing, thereby defining an operating configuration in which said reciprocal rotation is prevented and a non-operating configuration in which it allows said reciprocal rotation, thus preventing said housing from controlling the passage of the closure body between the closed and open positions; and a data connector to provide wireless data connection with the external apparatus to allow it to control the passage of the connection between operating configuration and non-operating configuration.

A container for the transport and storage of goods includes an internal fillable tank and an external support structure surrounding the tank. The external support structure has a base structure arranged below the tank, such that a base of the tank is supported on the base structure. The external support structure also has an upper support structure arranged above the tank for absorbing loads exerted on the tank from above. The base structure includes a plurality of lower column portions, and the upper support structure includes a plurality of corresponding upper column portions, which each project from opposing faces of the base structure and the upper support structure respectively and which meet somewhere along the height of the tank, thereby forming a number of columns for laterally supporting the tank.

A container for the transport and storage of goods includes an internal fillable tank and an external support structure surrounding the tank. The external support structure has a base structure arranged below the tank, such that a base of the tank is supported on the base structure. The external support structure also has an upper support structure arranged above the tank for absorbing loads exerted on the tank from above. The base structure includes a plurality of lower column portions, and the upper support structure includes a plurality of corresponding upper column portions, which each project from opposing faces of the base structure and the upper support structure respectively and which meet somewhere along the height of the tank, thereby forming a number of columns for laterally supporting the tank.

A proppant discharge system has a container with an outlet formed at a bottom thereof and a gate slidably affixed at the outlet so as to be movable between a first position covering the outlet to second position opening the outlet, and a support structure having an actuator thereon. The container is removably positioned on the top surface of the support structure. The actuator is engageable with gate so as to move the gate from the first position to the second position. A conveyor underlies the container so as to receive proppant as discharged from the container through the outlet. The container is a ten foot ISO container.

A proppant discharge system has a container with an outlet formed at a bottom thereof and a gate slidably affixed at the outlet so as to be movable between a first position covering the outlet to second position opening the outlet, and a support structure having an actuator thereon. The container is removably positioned on the top surface of the support structure. The actuator is engageable with gate so as to move the gate from the first position to the second position. A conveyor underlies the container so as to receive proppant as discharged from the container through the outlet. The container is a ten foot ISO container.

A proppant discharge system has a container with an outlet positioned in a bottom thereof and a gate affixed adjacent the outlet so as to be movable between a first position covering the outlet to a second position opening the outlet, and a support structure having an actuator thereon. The container is removably positioned on the top surface of the support structure. The actuator is engageable with gate so as to move the gate from the first position to the second position. A conveyor underlies the container so as to receive proppant as discharged from the container through the outlet. The container can be a ten foot ISO container.

A proppant discharge system has a container with an outlet positioned in a bottom thereof and a gate affixed adjacent the outlet so as to be movable between a first position covering the outlet to a second position opening the outlet, and a support structure having an actuator thereon. The container is removably positioned on the top surface of the support structure. The actuator is engageable with gate so as to move the gate from the first position to the second position. A conveyor underlies the container so as to receive proppant as discharged from the container through the outlet. The container can be a ten foot ISO container.

A portable system and method for processing waste to be solidified and placed in an active cell of a landfill. A portable base frame for supporting a landfill waste enclosure such as a silo or pressurized vessel may be used. An improved slide gate for use with the silo, as well as an improved feed hopper for conveying landfill waste, are also disclosed.

A portable system and method for processing waste to be solidified and placed in an active cell of a landfill. A portable base frame for supporting a landfill waste enclosure such as a silo or pressurized vessel may be used. An improved slide gate for use with the silo, as well as an improved feed hopper for conveying landfill waste, are also disclosed.