Dominator tanks are structurally engineered to accommodate repeated fill and emptying cycles. Tanks have a unique monolithic design that provides superior top load strength. The low profile design allows for shallower excavations. Snyder Tanks is a leading manufacturer of plastic and polyethylene tanks. Founded in 1957, Snyder Industries is a recognized leader in the manufacturing of tank and containment solutions for the bulk storage, processing and transportation of a wide variety of liquid, solid and dry materials.