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The battle for African copper has intensified, with the investment arm of Abu Dhabi’s IHC making a bold move for a controlling stake in Vedanta Resources’ prized Zambian copper assets, Konkola Copper Mines (KCM). This follows their recent acquisition of Mopani Copper Mines, painting a clear picture of their ambition …

The Botswana government is considering increasing its shareholding in global diamond miner De Beers, according to President Mokgweetsi Masisi, following parent company Anglo American’s announcement of plans to spin off or sell the business. Botswana currently owns a 15% stake in De Beers and contributes 70% of the company’s annual …

More is not always the right approach when it comes to using oil additives.  In many instances, blending more additive into the oil, does not result in improved performance. Sometimes, adding more additive actually causes the oil’s function to deteriorate.  In other cases, while the performance of the additive doesn’t …

Early automotive engines didn’t use any kind of filtration for the oil. It wasn’t until a patent was granted to Ernest Sweetland and George Greenhalgh in 1923 – for their product the “pure oil later” or “Purolator” – that you could buy an automobile with a full-pressure lubrication system. It …

Increasing the percentage of a certain additive may improve one property of an oil, while at the same time degrading another. When the specified concentrations of additives become unbalanced, overall oil quality can be affected. Some additives compete with each other for the same space on a metal surface. For …