A shrink film comprising a polyethylene film, characterized in that said polyethylene is an ethylene copolymer mixture having a molecular weight distribution in the range 10 to 35, a density of 915 to 940 kgm3, a weight average molecular weight of at least 100000 D and an MFR2. According to a different aspect of the invention, a method of making a mirror includes: providing a substrate having a surface thereon; forming a thin-film finish layer over the surface of the substrate using thin-film techniques, the finish layer having a surface on a side thereof opposite from the substrate; and polishing the surface of the finish layer. The invention further relates to corn seeds and plants produced by crossing plants of variety I291289 with plants of another variety, such as another inbred line. The method also includes forming a solder bump in electrical connection to the plurality of metal line islands. This design reduces gate delay because the dependency upon the gating logic is overridden and the number of stages is reduced. The method includes introducing a fuel into a combustor, detecting a failure of ignition of the fuel, and preventing ignition until the introduced fuel is substantially removed from the gas turbine engine.