A mine roof support has at least two elongated support members laterally adjacent one another and extending transverse to the mine face. Each of the support members has an underside, a first end portion facing towards and a second end portion facing away from the mine face. A shield arrangement is mounted on the second end portions and extends upwardly thereof for supporting the mine roof. An extension arrangement is connectable to the first end portions of the support members with limited freedom of pivoting movement in vertical direction, and includes a ground plate extending to all of the support members and inclined relative to the undersides thereof, and terminal portions which rise upwardly towards the mine face in the region of the free ends of the first end portions of the support members.