A stackable cargo container apparatus has a frame assembly formed by interconnected structural members, a substantially planar base, interconnecting side walls and at least one personnel access door. At least one lifting harness member of unitary or singular construction is operationally attached to the frame assembly, and permits lifting of the cargo container apparatus from its bottom and away from welds or other possible weak points. An integrated cargo weight measurement assembly permits quick and efficient determination of cargo weight placed on the planar base, and includes a digital display or other output device.