The extration which has been carried out for several years with the Fantini coalcutter makes it possible to square the square and to construct blocks of 1.7/3 m X 0.90/1.5 Mr. the height of the benches is determined by horizontal natural clay beds. The quarry is exploited on six benches of approximately 1.3 m in height on a coal face of 8 m on the whole without counting the discovery. “We have a current output from 600 to 700 m ³ per year, figure which can very largely increase because the matter healthy and is well trained. Today 75% of the production are marketed in blocks for cutter and monumental sculptor.
In order to develop the falls of his career, Nicolas Lestra, set up a unit of fragment of waste to produce stone to be built.