The Maintenance Superintendent at Norlisk Nickel’s Black Swan mine had a problem. Delivery of grease to equipment during the cold of winter was causing frustra- tion, particularly away from the depot. “It can get to freezing in the desert and it can be a struggle to use our lubrication tanks until the sun is up and has had a chance to heat the contents” he says. An inspired thought made him wonder whether he might be able to use a ja

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