DOMINICAN REPUBLIC – Historically, mining processes with poor recovery rates have resulted in tailings with significant amounts of recoverable material. The extraction of this material can be achieved using dredges. There are several factors that justify the extraction and re-processing of tailings: Tailings require fewer resources when compared to conventional mining. For example, a dredge...Continue Reading
Owner: Quebec Hydro-Electric Commission, Canada PRINCIPAL PARTICULARS: Hull Size – length in feet 220′ Maximum Digging Depth 90′ Suction Pipe Size – ID 42″ Discharge Pipe Size – ID 36″ Dredge Pump Horsepower 8000 Excavator Horsepower 1000 Total Installed Horsepower 10,000 PROJECT INFORMATION: The Quebec Hydro-Electric Commission began making plans as early as 1925 to construct a...Continue Reading
Owner – E.I. DuPont de Nemours & Co., USA PRINCIPAL PARTICULARS: Hull Size – length in feet 165′ Maximum Digging Depth 50′ Suction Pipe Size – ID 23″ Discharge Pipe Size – ID 23″ Dredge Pump Horsepower 4800 Excavator Horsepower 1450 Total Installed Horsepower 4800 PROJECT INFORMATION: DuPont, the leading U.S. chemical company and the world’s...Continue Reading
Source: Engineering & Mining Journal Roca Fosforica Mexicana SA de CV (Rofomex) started up one phosphate mine in Baha California Sur in 1981 and another in 1982. The combined production of these operations were expected to lift Mexico from a position of almost total dependence on phosphate rock imports in 1980 to self-sufficiency in 1985. In...Continue Reading
Source: Engineering News Record – ENR.com As John Kammeyer, P.E., Tennessee Valley Authority’s vice president for coal combustion, drove up to the TVA’s Kingston coal electricity plant at 3:30 a.m. on Dec. 23, 2008, and “saw all that crap across the road” – to be specific, 5.4 million cu yd of coal ash from the...Continue Reading
Source: IMC Global Press Release With an annual capacity of over ten million short tons, IMC Kalium is among the world’s leading and lowest-cost producers of potash. With 1997 net sales and gross margins of $617.4 million and $237.7 million, respectively, the business unit represents 14% of global capacity. IMC Kalium’s potash products were sold in more...Continue Reading
Source: International Dredging & Port Construction Ellicott® International of Baltimore, Maryland, USA, commissioned the first of two bucketwheel dredgers which will be used in the salt mining industry in both Saudi Arabia and China. The first of two orders was to provide a special electric bucketwheel dredger for Saudi Petrochemical (SADAF). The vessel will be used...Continue Reading
Source: International Dredging Review Associated Minerals Corp. is operating a bucketwheel dredger at Green Cove Springs, Florida, south of Jacksonville. The dredge “Rocky Ford” digs a mineral-bearing sand containing rutile, zircon and ilmenite. The dredge uses a 22-inch pump. A staff of 108 runs the dredge, the wet mill just behind the dredge, the dry mill...Continue Reading
