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| Provencale s.a. European manufacturer of calcium carbonate; supplies mikhart, calgar and granulated marble variations. | |
| Spectrum Chemical Manufacturer and distributor of chemicals, safety products and lab equipment for laboratories and manufacturing facilities. | ||
| Lhoist Group Manufacturers of lime and other chemicals derived from limestone. | ||
| Singleton Birch Independent manufacturer of lime products, such as quicklime (burnt lime), hydrated lime (slaked lime) and liquid lime (aqualime); based in England. | ||
| Penrice Soda Products Manufactures and sells light and dense soda ash, sodium bicarbonate in various grades, sodium carbonate and salt. | ||
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