Sep 08, 2005. /Lesprom Network/. Due to energy and other variable cost increases, Papeteries de Gascogne is announcing a price hike of Euro 50/tonne on its natural MG paper, before the end of September. Papeteries de Gascogne was founded in 1925 by forest owners in order to create usage of their timber and to develop the Landes forest plantation.The paper mill is situated at Mimizan, a sea side resort on the coast of the Bay of Biscay.