Savannakhét Lao ສະຫວັນນະເຂດ is a province of Laos The name derives from Savanh Sepon is the largest mine in Laos with reserves of copper and gold the Mekong connects Mukdahan Province in Thailand with Savannakhet in Laos Lao State Gypsum Mining Co Ltd Champhone District and Savan Gypsum