 He built the "Faro Corona" in Ancud, "Punta Caldera" in Atacama, "Punta Tortugas" in Coquimbo, "Isla Quiriquina" in Quiriquina, "Punta Galera" and "Punta Niebla" in Corral.The first lighthouses in Chile used colza oil as fuel, but in 1878 it was replaced by Bunsen burners.George Slight designed and built in the 1890s more than 70 of today's historic lighthouses of Chile.