Abstract: An installation apparatus for a measurement tool in an underground mine with overhead drill holes, the installation apparatus comprising: a support that can be removably secured to the ceiling, wall and/or ground of the mine, and an installation conduit that can be removably coupled to the support and aligned with the drill hole to deploy a survey and/or geophysical tool into the open drill hole.

Abstract: A retractable eraser has an elongated contoured housing which has a longitudinal slot and spaced detents and an opening at one end. A carrier has a button which is depressible so that a catch clears the detents to permit selective longitudinal displacement of the carrier. An oval shaped eraser element is mounted to the carrier and displaced into and out of the housing so as, in one position, to project beyond the housing. Bristles project longitudinally from the housing around the opening.

Abstract: A rack/module assembly for first aid supplies comprises a plurality of modules which are insertable into a receptacle of a rack. Each module is semi-transparent or transparent and has a front cover portion which is pivotal to provide access to first aid supplies within the module enclosure. An integral latch mechanism releasably latches the cover in a closed position. Each of the modules contains first aid supplies specific to a given first aid treatment.

Abstract: A case for first aid supplies has a housing is enclosed by a lid and is adapted to be both portable and mountable to a wall. The lid is an integral one piece member which includes a latch mechanism as well as an engagement strip for joining with the housing. An integral living hinge allows the lid to pivot. A stop mechanism limits the pivoting of the lid so that a tray may be formed.

Abstract: A retractable eraser has an elongated contoured housing which has a longitudinal slot and spaced detents and an opening at one end. A carrier has a button which is depressible so that a catch clears the detents to permit selective longitudinal displacement of the carrier. An oval shaped eraser element is mounted to the carrier and displaced into and out of the housing so as, in one position, to project beyond the housing. Bristles project longitudinally from the housing around the opening.

Abstract: A cargo transfer assembly structured to move baggage, handicapped vehicles such as wheelchairs, and other cargo between a passenger boarding bridge and the tarmac, ground or other supporting surface on which the boarding bridge is positioned. A lifting assembly having a lift apron and a lift tray connected thereto is movable between a raised position and a lowered position. A mobile cart structured to carry the cargo thereon is removably mounted on the lift tray and movable therewith in accessible relation to the boarding bridge and the supporting surface when in the raised position and lowered position respectively. A leveling assembly is disposed and structured to align the lift tray with the support surface when in the lowered position and with a corresponding portion of the base of the boarding bridge, when the lift tray is in the raised position.