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 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 is a ten foot ISO container.

An oil storage, loading and offloading system includes a submerged oil storage tank with multiple vertically placed flexible containers. The system directly connects to the topsides of an offshore oil production platform above water to assist oil loading and offloading operations. During loading, oil is pumped in and stored inside flexible containers, which are expanded to displace equivalent amount of water out of the oil storage tank; during offloading, oil is pumped out from flexible containers and the reduced volume of each contracted container is then filled in by the equivalent amount of water from the surroundings There is no physical contact between water and oil. The submerged tank on-bottom weight has a limited variation during the loading and offloading operations. This disclosed system can be utilized for fixed offshore platforms, especially for shallow water marginal field developments, and for deepwater floating platforms such as SPAR and semi-submersible (SEMI) structures.

An oil storage, loading and offloading system includes a submerged oil storage tank with multiple vertically placed flexible containers. The system directly connects to the topsides of an offshore oil production platform above water to assist oil loading and offloading operations. During loading, oil is pumped in and stored inside flexible containers, which are expanded to displace equivalent amount of water out of the oil storage tank; during offloading, oil is pumped out from flexible containers and the reduced volume of each contracted container is then filled in by the equivalent amount of water from the surroundings There is no physical contact between water and oil. The submerged tank on-bottom weight has a limited variation during the loading and offloading operations. This disclosed system can be utilized for fixed offshore platforms, especially for shallow water marginal field developments, and for deepwater floating platforms such as SPAR and semi-submersible (SEMI) structures.

A portable hermetic silo is comprised of flexible, hermetic material. The silo is designed such that air may be introduced into a wall portion thereof, thus inflating the walls during filling of the silo. This allows the silo to be self-supporting while filling, and once the grain or other commodity is inside, air may be removed from the wall portion.

An oil storage, loading and offloading system includes a submerged oil storage tank with multiple vertically placed flexible containers. The system directly connects to the topsides of an offshore oil production platform above water to assist oil loading and offloading operations. During loading, oil is pumped in and stored inside flexible containers, which are expanded to displace equivalent amount of water out of the oil storage tank; during offloading, oil is pumped out from flexible containers and the reduced volume of each contracted container is then filled in by the equivalent amount of water from the surroundings There is no physical contact between water and oil. The submerged tank on-bottom weight has a limited variation during the loading and offloading operations. This disclosed system can be utilized for fixed offshore platforms, especially for shallow water marginal field developments, and for deepwater floating platforms such as SPAR and semi-submersible (SEMI) structures.

An oil storage, loading and offloading system includes a submerged oil storage tank with multiple vertically placed flexible containers. The system directly connects to the topsides of an offshore oil production platform above water to assist oil loading and offloading operations. During loading, oil is pumped in and stored inside flexible containers, which are expanded to displace equivalent amount of water out of the oil storage tank; during offloading, oil is pumped out from flexible containers and the reduced volume of each contracted container is then filled in by the equivalent amount of water from the surroundings There is no physical contact between water and oil. The submerged tank on-bottom weight has a limited variation during the loading and offloading operations. This disclosed system can be utilized for fixed offshore platforms, especially for shallow water marginal field developments, and for deepwater floating platforms such as SPAR and semi-submersible (SEMI) structures.

Knock down yard tools are provided which are made of flexible heavy duty sheet material joined to form a container for handling yard waste. Included are a truck bed carrier container, a skid container, a bagging container and a hand held carrier. In one embodiment, struts are provided which can be readily assembled to and disassembled from the sheet material to help hold the shape of the container. Preferably the struts are collapsible, and most preferably comprise sections held together and biased to assembly by elastic cord. In a preferred embodiment, a collection of such knock down yard tools are provided along with auxiliary tools for manipulating the yard waste and facilitate its placement in the knock down containers. The auxiliary tools include hand scoops a leaf press, and a gripper.

A portable trash container adapted to be used with an hydraulic-powered lift having a pair of forks extending from a truck, and method of use. The portable trash container includes an upper frame constructed of first and second side walls and first and second end walls, and a collapsible mesh container secured to the upper frame. A pair of tubes are secured to the first and second side walls to receive the pair of hydraulic-powered forks.

A portable trash container adapted to be used with an hydraulic-powered lift having a pair of forks extending from a truck, and method of use. The portable trash container includes an upper frame constructed of first and second side walls and first and second end walls, and a collapsible mesh container secured to the upper frame. A pair of tubes are secured to the first and second side walls to receive the pair of hydraulic-powered forks.

A baffle for a flexible liquid transport tank, having a base portion connected to an interior surface of the liquid transport tank, a single panel shaped to substantially cover the internal cross-sectional area defined by the liquid transport tank, and a link mechanism to interconnect the single panel to the base portion.