De-trenching apparatus (100) for extracting a buried line, such as a cable or pipeline, is disclosed. The de-trenching apparatus comprises a channel (112) configured to receive a buried line to be extracted, the channel comprising a first flared opening (114) at a front end of the de-trenching apparatus and a second flared opening (115) at the rear end of the de-trenching apparatus, the first and second flared openings each having a curved surface (111) configured to support the line during extraction, and material removal means for removing material from around the buried line ahead of the de-trenching apparatus.

An electric cable saddle, or support, arrangement includes a housing having an upper recessed portion adapted to receive and support one or more electrical cables in a fixed, stable manner. Plural apertures disposed on upper portions of the housing on opposed sides of the cable(s) and aligned generally transverse to the length of the cable(s) are adapted to receive a flexible, high strength tie member, or strap, for securely attaching the cable(s) to an upper portion of the housing. A slot disposed in a lower portion of the housing and also aligned generally transverse to the length of the cables(s) is adapted to receive a structural support member for supporting the housing and cable(s). A retaining member also disposed in a lower portion of the housing is moveable adjacent to or into engagement with the support member for fixed positioning of the housing on the support member.

An electric cable saddle, or support, arrangement includes a housing having an upper recessed portion adapted to receive and support one or more electrical cables in a fixed, stable manner. Plural apertures disposed on upper portions of the housing on opposed sides of the cable(s) and aligned generally transverse to the length of the cable(s) are adapted to receive a flexible, high strength tie member, or strap, for securely attaching the cable(s) to an upper portion of the housing. A slot disposed in a lower portion of the housing and also aligned generally transverse to the length of the cables(s) is adapted to receive a structural support member for supporting the housing and cable(s). A retaining member also disposed in a lower portion of the housing is moveable adjacent to or into engagement with the support member for fixed positioning of the housing on the support member.

A protective cover for surrounding a conduit assembly in a mine has a flexible elongate main body that comprises a plurality of discrete functional layers and which is configurable as a sleeve having an outer surface, the protective cover comprising a first layer, substantially comprised of an aramid based material, that is structurally configured to provide substantial protection from the force associated with impacting projectiles originating from the external environment whilst also being configured to substantially resist internally generated forces of the type that are typically associated with a burst hose, a second layer, adjacent to the outer surface of the first layer, that is structurally configured in the form of a mesh thereby protecting the first layer from external bodies that may otherwise potentially induce tear damage to the first layer, the protective cover characterised by further comprising a third layer, adjacent to said first layer, comprising a polymeric membrane that is substantially impermeable to the passage of at least one liquid. There is also provided a system for protecting at least one or a plurality of cables and/or hoses from matter falling from above, said system comprising use of at least one such protective cover suspended from a flexible strand that is in turn attached to a fixed structure that is located substantially vertically above said at least one or a plurality of cables and/or hoses.

A protective cover for surrounding a conduit assembly in a mine has a flexible elongate main body that comprises a plurality of discrete functional layers and which is configurable as a sleeve having an outer surface, the protective cover comprising a first layer, substantially comprised of an aramid based material, that is structurally configured to provide substantial protection from the force associated with impacting projectiles originating from the external environment whilst also being configured to substantially resist internally generated forces of the type that are typically associated with a burst hose, a second layer, adjacent to the outer surface of the first layer, that is structurally configured in the form of a mesh thereby protecting the first layer from external bodies that may otherwise potentially induce tear damage to the first layer, the protective cover characterised by further comprising a third layer, adjacent to said first layer, comprising a polymeric membrane that is substantially impermeable to the passage of at least one liquid. There is also provided a system for protecting at least one or a plurality of cables and/or hoses from matter falling from above, said system comprising use of at least one such protective cover suspended from a flexible strand that is in turn attached to a fixed structure that is located substantially vertically above said at least one or a plurality of cables and/or hoses.

An isolator for mounting cable hangers, comprising: a platform having a hole; two extenders extending away from the bottom surface of the platform; and two locking clips, wherein each locking clip extends from an extender in a direction that is away from the bottom surface of the platform.

An isolator for mounting cable hangers, comprising: a platform having a hole; two extenders extending away from the bottom surface of the platform; and two locking clips, wherein each locking clip extends from an extender in a direction that is away from the bottom surface of the platform.

An embodiment describes a method for installing a single power cable span in a tunnel having an entrance and an exit. The method includes positioning a head portion of the single power cable span near the entrance and laying the single power cable span in the tunnel past the exit. The laying of the single power cable span comprises repeating a plurality of sub-steps until the head portion reaches an endpoint outside the tunnel. The plurality of sub-steps includes connecting a trolley at the entrance in a slidable manner on a rail longitudinally extending along the tunnel between the entrance and the exit, joining the trolley to a pulling rope and to the single power cable span, and moving the trolley along the rail by pulling the pulling rope by a predetermined length. Another embodiment relates to an equipment for installing a single cable span in a tunnel.

An embodiment describes a method for installing a single power cable span in a tunnel having an entrance and an exit. The method includes positioning a head portion of the single power cable span near the entrance and laying the single power cable span in the tunnel past the exit. The laying of the single power cable span comprises repeating a plurality of sub-steps until the head portion reaches an endpoint outside the tunnel. The plurality of sub-steps includes connecting a trolley at the entrance in a slidable manner on a rail longitudinally extending along the tunnel between the entrance and the exit, joining the trolley to a pulling rope and to the single power cable span, and moving the trolley along the rail by pulling the pulling rope by a predetermined length. Another embodiment relates to an equipment for installing a single cable span in a tunnel.

A connection device for connecting a multicore branch line to a flat cable has a connection device housing that allows the flat cable to pass through, and penetration contacts for contacting the flat cable without stripping of the insulation. The penetration contacts are situated in the connection device housing. The connection device also has an electrical disconnection point between the branch line and the flat cable, and at least one seal in the area of at least one opening of the connection device housing for protection from penetration of dust and/or water. The connection device housing is made, at least partially, of plastic, and on its outer side or inner side is coated with a diffusion barrier layer, wherein the diffusion barrier layer includes one or more layers, one of which is a metallic layer.