The US Coast Guard decommissioned the Petit Manan Lighthouse, located in a National Fish & Wildlife bird sanctu- ary, three-miles off the coast of Maine. Renovation of the lantern required stripping lead-based marine and hydro- poly-eurathane coatings from steel and cast iron; cleaning bronze and copper on the roof deck, and removing rust and black stains from the structure’s granite block. Even though conventional abrasives were specified, the project contractor chose the Sponge Blasting TM System: ¦ Blasting Controlability - Sponge Media TM abrasives are sensitive on bronze, copper and masonry substrates, yet more aggressive on steel and cast iron substrates - a range most conventional abrasives do not offer. ¦ Environmentally Friendly - Removing toxic, lead-based paint, meant the proc

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