Abstract: A barricade wall is provided that is easily and rapidly customizable in a mine depending on the requirements of the particularly open area. The barricade wall can be customizable depending on the size and spatial requirements of a particular open area in a mine. Further, the top beams of the barricade wall can be elongated or shortened, depending on the requirements of the open area in the mine. The barricade wall has a first rigid wall section with spring loaded wall extensions attached to the wall section.

Abstract: A barricade wall is provided that is easily and rapidly customizable in a mine depending on the requirements of the particularly open area. The barricade wall can be customizable depending on the size and spatial requirements of a particular open area in a mine. Further, the top beams of the barricade wall can be elongated or shortened, depending on the requirements of the open area in the mine. The barricade wall has a first rigid wall section with spring loaded wall extensions attached to the wall section.

Abstract: There is described a hanger for hanging an object from a composite wall. The composite wall has a concrete core, a foam outer wall and a second outer wall. The hanger comprises: a first plate having an embedded portion for retention within the concrete core and a hanging portion extending from the foam outer wall for connection to the object. The embedded portion having an edge in addition to its distal edge, the edge being substantially transverse to the longitudinal axis of the first plate. A method for installing the hanger is also described. The hanger is particularly well suited for hang a joist.