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The manufacturer of this product, Japan Rikagaku Industry, was established in 1937 on the belief that every human being needs to “be loved, be useful, be praised and be needed”. The company chose to manufacture chalk made from calcium carbonate because there was an indication that teachers who used chalk had a higher probability of tuberculosis than others. In 1953, the resulting dustless chalk was the only one approved by the Educational Ministry of Japan. In their two factories, Rikagaku employs people often overlooked by society. In the Kawasaki factory, there are 48 employees in total: 22 severe mentally-disabled people and 9 mildly mentally disabled people. In the Misaki factory, there are 28 employees in total: 13 severe mentally-disabled people and 9 mildly mentally disabled people. The company has a model blend of environmental and people friendly management policies.