Profile: Manvers Engineering Ltd. designs & manufactures closed circuit slurry and separation systems, bespoke units constructed to customer operating parameters, and other associated equipment for the tunneling industry. We also specialize in removing sub-micron particles from other water based effluent streams in a whole host of industries. The Plant Nappy® is designed to replace existing forms of drip trays with a new light: a user friendly method of containing the odd mishap.