"Keeping the roads open!" Sand dunes like those in the Imperial Sand Dunes Recreation Area offer a unique off-highway recreation opportunity -- and a steady supply of sand blown across access roads. The BLM El Centro Field Office’s "Force Account" maintenance crew tackles the constant challenge of keeping these roads clear of sand and debris and open to the public. Popular recreation areas -- like the Imperial Sand Dunes -- require the attention of these unsung workers who tirelessly scrape sand and maintain access.
http://www.blm.gov/ca/st/en/info/newsby ... dcrew.html