2015 Vermeer (WYO-BEN) Thunderstorm II mud recycling system w/ 3,535 hours is in good condition. The WYO-BEN Thunderstorm II is a mud recycling system designed for use with HDD rigs less than 100,000 pounds, with a fluid capacity of 3,000 gallons. Tanks are coated with an Oilfield Grade Liner for longevity and ease of cleaning. The system mixes and cleans drilling fluids using eight 5 inch cones, and has a three-panel double shaker that deposits cuttings at the rear of the unit for ease of collection and occupying a smaller space.