Mining by drilling and pumping :

After a period of 150 years of mining by extraction of oil sands, the Le Bel and Co society installed its first pumping station in 1889. Pechelbronn and its area then looked much like a European Texas. From then on the oil-field would exclusively be exploited by drilling and pumping until 1917.During that period, 2850 drillings, representing a length of 760 000 metres for a production of 790 000 tons, were made.The deepest drilling : at Kutzenhausen, reached the granites substratum 1561 metres deep.The deepest productive drilling : at Kutzenhausen, it exploited the productive layer of Lettenkohle (top of Muschelkalk), 936 metres deep.The drilling with the greatest total production : 28 882 tons, 148 metres deep, in the upper layers of Pechelbronn on the Lampertsloch territory over a period of 367 months of activity.

Mining by shafts and galleries :

In 1917 was started the exploitation of the oil-field by means of shafts and mine galleries, which is one of Pechelbronn’s most original characteristics. This process was used, but on a smaller scale, only at Wietze in Germany, from 1919 onward, and 4 years later in Rumania.Three new pits, Clemenceau, Le Bel, and Daniel Mieg, comprising 6 shafts, 3 of which reached a depth of 4000 metres, were started after World War I. A fourth pit, De Chambrier, with only one shaft, was begun during World War II, a last and eighth one being sunk in 1948 without any yield.