PND first developed the Gunderboom® to function as a silt containment curtain during dredging operations. The boom's application has since been extended to include oil spill and biological contaminant. Fabricated of absorbent geotextile material, the boom features variable-depth construction and it has performed successfully in the face of severe wind and tidal conditions. The Gunderboom® was utilized to protect hatcheries during 1989's disastrous Exxon Valdez spill in Prince William Sound, and it is currently being deployed off the eastern coast of the United States to create safe offshore swimming pools in areas inundated with various types of pollution. For more information on the Gunderboom Marine Life Exclusion System, Reservoir Protection System(TM), Particulate Control System(TM), Sound Attenuation System and Beach Protection System, visit www.gunderboom.com.