Abstract: The present disclosure relates to a method of removing a liner from a mill, the liner fastened to a mill shell by at least one liner bolt, the method including: (a) driving the at least one liner bolt through the mill shell until it becomes retained in the liner, whereby in a retained position, a head of the at least one liner bolt is exposed so as to project proud of the liner towards an interior of the mill; (b) engaging a tool onto the at least one liner bolt; and, (c) lifting the liner away from the mill shell using the tool to thereby enable the liner to be removed from the mill. A system for removing a liner from a mill and tool for use in removing a liner from a mill are also described.

Abstract: The present disclosure relates to a method of removing a liner from a mill, the liner fastened to a mill shell by at least one liner bolt, the method including: (a) driving the at least one liner bolt through the mill shell until it becomes retained in the liner, whereby in a retained position, a head of the at least one liner bolt is exposed so as to project proud of the liner towards an interior of the mill; (b) engaging a tool onto the at least one liner bolt; and, (c) lifting the liner away from the mill shell using the tool to thereby enable the liner to be removed from the mill. A system for removing a liner from a mill and tool for use in removing a liner from a mill are also described.

Abstract: Firstly, a custom designed 3D printer with x-y-z gantry robot with an accuracy of 0.1 ?m was adapted with a custom designed printing head (51b). Secondly, a two component silicone elastomer suitable for RP was developed that incorporates the desired characteristics and properties similar to those commercially available for the provision of facial and body prostheses. The silicone elastomer is composed of polydimethylsiloxane (PDMS) chains, filler, catalyst and crosslinker. By varying the amount of these components the mechanical properties of the silicone elastomer can be altered, for example, tensile strength, tear strength, hardness and wettability. To achieve these desired properties consideration must also be given to the set time and viscosity of the silicone elastomer and additionally the speed at which the material is printed.

Abstract: Systems, apparatuses and methods (“utilities”) for use in “internally” cooling the compressor of a gas turbine engine so as to approximate isothermal compression and thereby increase the power and/or efficiency of the engine. In one arrangement, a “cooling jacket” or heat exchanger having coolant circulating or passing therethrough may be mounted around an outer surface of the compressor to absorb heat or thermal energy generated from the compressor. In another arrangement, the stator blades of the compressor may include passages through which a coolant may be circulated or passed to absorb heat from air passing through the compressor.

Abstract: A cage for housing animals, particularly for dangerous animals like venomous snakes, is disclosed. The cage has at least two compartments, one of which is an externally sealable drawer that can be removed from the cage by sliding it from the other component, thus permitting removal of the animal from the cage without handling the animal.