World's Largest Vertical Roller Mill Underway At Shah Cement. Holcim Grassroots Cement Plant An AECOM led joint venture constructed one of the world's largest cement plants on 3 900 acres 45 miles south of St Louis Missouri The facility's single kiln (300 feet long by 21 feet in diameter) produces 12 000 metric tons of clinker per day (4 million tons per year) making it the largest single ...
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