A flexible tandem dump trailer that can move a variety of items is the Wielton PRC 2HP.
Numerous features and combinations are also available.
Type: Trailers
Starting cost: $50,000
Capacity to load: 27,500 l to 41,000 l
Features include a rear towing hitch, a hydraulic drawbar, a folding body that can fold left or right depending on the arrangement, and a rear steerable axle that locks automatically while reversing.
The following configurations are available: tires, license plate, body size (small, medium, and large), folding body (left and right folds), tarp (no or yes), front wall window (no or yes), grain slider (no or yes), ladder and platform (no or ladder only/both), bumper (no or front/rear mudguards), mounting frame only/yes, and under-run protection (no or mounting frame only/yes).

Thanks to Leo.klnz