Chilean cement company Empresas Melon aims to submit the EIS for a US$20m cement grinding plant to national environment authority Conama by April 15, a company spokesperson told BNamericas.  The plant would be built in southern Region X capital Puerto Montt, and have a 300,000tpa capacity. Once approved, the plant could begin operations in the first half of 2007.  Puerto Montt was selected due to the area’s growth, said the spokesperson, adding that the new plant would allow the company’s current La Calera plant in central Region V to concentrate on that part of the country. La Calera has a 1.5Mta capacity.