Oil sands
Oil sands were mined from 1745 in Merkwiller-Pechelbronn, initially under the direction of Louis Pierre Ancillon de la Sablonnière, by special appointment of Louis XV. The Pechelbronn oil field was active until 1970, and was the birthplace of companies such as Antar and Schlumberger. The first modern oil sands refinery was built there in 1857; and it also had the first school of oil technology.