Aggregate delivery unity

A modular aggregate delivery assembly for a fracturing operation at an oilfield, the assembly comprising:

• a mobile chassis;
• a plurality of interchangeable modular containers independently coupled to said mobile chassis for housing aggregate for the fracturing operation, each interchangeable modular container having a body to receive aggregate, the aggregate being directed into the body through a fill port located in a lower portion of the body;
• and
• a plurality of weight measurement devices coupled to said plurality of interchangeable modular containers to independently monitor aggregate levels therein in substantially real-time, wherein the weight measurement devices are removably disposed between the mobile chassis and the modular containers.

A modular container for housing aggregate, the modular container comprising:

• a body having a lower portion for positioning on a mobile chassis and an upper portion, wherein the lower portion of the body has an opening for communication with a valve gate of a cradle adjacent the container, the valve gate of the cradle configured to controllably release aggregate from the container;
• and
• a fill port for filling the container with aggregate, said fill port coupled to said body through the lower portion;
• and
• an opening at an upper portion of the container for filling the container with aggregate in conjunction with or alternatively to the fill port.