Manganese Bronze Holdings British subsidiary Geely UK Ltd to resume assembly of the London black cab in Coventry. Manganese Bronze Holdings Manganese Bronze Holdings plc (MBH) was the holding company of LTI Limited: their sole business in their final years as a company was London black taxicab manufacturing through the LTI subsidiary. MBH was founded in 1899 and was once an important conglomerator of British motorcycle marques. The company acquired the subsidiary Carbodies in 1973, which was involved in the design, development and production of taxicabs. This subsidiary eventually became "LTI Limited", and traded first as "London Taxis International" and then as "The
Manganese(II) carbonate to give water-soluble salts. Manganese carbonate decomposes with release of carbon dioxide, i.e. calcining, at 200 °C to give MnO: This method is sometimes employed in the production of manganese dioxide, which is used in dry-cell batteries and for ferrites. Manganese carbonate is widely used as an additive to plant fertilizers to cure manganese deficient crops. It is also used in health foods, in ceramics as a glaze colorant and flux, and in concrete stains. It is used in medicine as a hematinic. Manganese poisoning, also known as manganism, may be caused by long-term exposure to manganese dust or fumes.