DIGBY COUNTY: Cape St. Marys Bridge Cape St. Marys Bridge, located on John Doucette Road, Cape St. Marys, is closed for replacement until Thursday, Nov. 15. Detour signs in place. YARMOUTH COUNTY: Abrams River Bridge, Trunk 3 Abrams River Bridge on Trunk 3, about one kilometre west of Eel Lake Road, will be closed for bridge replacement until Wednesday, Oct. 31. Detour signs are in place. HALIFAX REGIONAL MUNICIPALITY: Highway 118 Highway 118, northbound between Exit 13 and Exit 14, is reduced to one lane for repaving and widening until Thursday, Nov. 15. LUNENBURG COUNTY: Parks Creek Bridge Parks Creek Bridge on Route 332 is closed for bridge replacement until Wednesday, Oct. 31. Motorists are required to detour via Route 332 to Indian Path Road and back to Route 332. DIGBY COUNTY: Trunk 1, Meteghan River Bridge Trunk 1, Meteghan River Bridge, Meteghan, to Highway 101 Connector, for about six kilometres, has alternating lane closures for paving and patching until Friday, Oct. 26. Personnel and signs will be on site. Work takes place from sunrise to sunset. COLCHESTER COUNTY: Bass River – Edgewood Road Edgewood Road to Trunk 2, Bass River, is reduced to one lane for brush cutting and road patching until Wednesday, Oct. 31. Traffic control on site. Expect delays. Work takes place from sunrise to sunset. CONTINUING WORK CUMBERLAND COUNTY: Nappan Marsh (Rainbow) Bridge, Trunk 2 Nappan Marsh (Rainbow) Bridge over the Nappan River on Trunk 2, outside Amherst, is closed until further notice. A detour is available on Route 302, Southampton Road and Smith Road. Traffic approaching Amherst is being rerouted a short distance on the Nappan and Lower Porter Roads, while traffic leaving Amherst is required to detour on Smith Road. YARMOUTH COUNTY: Wyman Road, Chebogue Wyman Road, Chebogue, is reduced to one lane for patching and repaving until Wednesday, Oct. 31. Work takes place from daylight to dusk. -30- QUEENS COUNTY: Highway 103 Highway 103, near Liverpool, between Exit 18 and Exit 19, has alternating lane closures for paving until Monday, Oct. 22. Traffic control will consist of stop and go traffic. Work takes place from sunrise to sunset. HALIFAX REGIONAL MUNICIPALITY: Highway 102/103 – Bicentennial Highway Blasting is taking place on Highway 102 between Exit 2A and Exit 1D and Highway 103 between Exit 2A and Exit 1B. Work is for the new 102/103 interchange. Blasting will take place twice a day at 11 a.m. and 2 p.m. for ten-minute intervals. Work is expected to continue until Saturday, Dec. 1. HALIFAX REGIONAL MUNICIPALITY: Highway 103 Blasting is taking place twice a day, Monday through Friday, from 10 a.m. to 11 p.m. and 1 p.m. to 3 p.m. on Highway 103 between exits 5 and 5A. Traffic will be stopped in both directions while blasting is occurring. Traffic may be stopped for periods of 20 minutes. Expect delays and proceed with caution. Blasting will be ongoing until mid-December. LUNENBURG COUNTY: Crescent Beach Road Crescent Beach Road, from Route 311 to LaHave Islands Road, has alternating lane closures for repaving and upgrading until Wednesday, Oct. 31. Work takes place from sunrise to sunset. VICTORIA COUNTY: Seal Island Bridge The Seal Island Bridge is undergoing a detailed inspection that requires lane closures and, at times, short-term closures. Motorists should expect delays between the hours of 7 a.m. and 7 p.m. until the end of November. Traffic control is in place. RICHMOND COUNTY: Port Royal Bridge Port Royal Bridge on Port Royal Road on Isle Madame, is closed until further notice. Traffic can detour on MacEachern Road. QUEENS COUNTY: Eastern Shore Road Eastern Shore Road, from Trunk 3 easterly for about four kilometres, has alternating lane closures for paving until Wednesday, Oct. 31. Traffic control consist of stop-and-go traffic. Work takes place from sunrise to sunset. LUNENBURG COUNTY: Trunk 3 Trunk 3, from Trunk 12 to Wake Up Hill Road, will have alternating lane closures for repaving and upgrading until Wednesday, Oct. 31. Work takes place from sunrise to sunset. HALIFAX REGIONAL MUNICIPALITY: Highway 102 Highway 102, northbound from Exit 4C (Bedford) to Exit 5 (Fall River), is reduced to one lane for repaving and widening until Thursday, Nov. 15.
Anglo Platinum accounts for about 40% of the world’s newly mined platinum. Its Mogalakwena mine opened in 1991 and can potentially mine ore from five to seven open pits for at least the next 35 years and possibly longer. The Platreef, richer in base metals by comparison with the other PGM reefs in South Africa, outcrops along the entire length of the lease. There are two separate processing plants with combined milling capacity of about 11.4 Mt/y. Steve Burks, Managing Director of Whittle Consulting (Africa) announced the completion of the extensive Enterprise Optimisation study of Mogalakwena in the Limpopo province of South Africa, with a positive outcome.Output from Mogalakwena of equivalent refined platinum in 2010 was 260,300 oz, an increase of 10% from the previous year according to the 2010 Annual Report. Ore tonnage milled increased by 7% to 10.4 Mt while head grade declined as planned by 4% to about 2.6g/t (3PGM+Au).Whittle Consulting was appointed to implement the Enterprise Optimisation study in August 2010. The major objectives identified were:To facilitate deferral or minimisation of capital expenditure for the next three to five yearsTo evaluate the merits of several alternative operating strategies. These included variable versus capped mining rate, strategic stockpiling of low grade ore, deferral of waste stripping where possible but with smaller short term pit phases to access higher grade ore earlier, consideration of several concentrator upgrade or expansion strategiesTo determine the optimal mining rate matching the current concentrator capacityTo establish the optimum dynamic mining and concentrator processing rates matching current smelter and refinery capacity constraintsTo establish the optimal production rate for Mogalakwena taking into account the latest ore resource data and applying current cost estimates for possible mine, concentrator and downstream process plant expansions.This work was carried out in three sequential phases between September 2010 and February 2011 with interim reports and presentations being produced at the end of each phase enabling further work to be redirected if appropriate.Typically Whittle Consulting defines 10 value levers driving Enterprise Optimisation: Pit shells, pit phases, mining schedule, dynamic cut-off grade, strategic stockpiling, plant calibration, dynamic product specifications, logistics, capital expenditure and simultaneous optimisation of all these mechanisms over the entire life of mine. In the case of Mogalakwena, it was possible to apply almost all of these mechanisms.The objective of any Enterprise Optimisation exercise is to increase and optimise NPV (the sum of the discounted annual cashflows over the whole period) of the overall operation. This measurement of performance reflects the time value of money and maximises the opportunity to generate free cash for re-investment in the early years of operation, providing more flexibility to management and reducing risk. Frequently improvements in NPV in the range 5 to 35% have been demonstrated to be possible at other operations studied.In this case, the exercise commenced with a half day training seminar and kick-off meeting on site, after which data collection commenced immediately. The existing resource block model was utilised, supplemented by operational data from every section of the operation including geological, mining, processing, operating cost, capital cost and general commercial information. This was collated in a single Business Model for the whole enterprise which was used with the block model data and the mine’s current pit shell and phase designs to prepare a base case Optimisation Run using Whittle Consulting’s proprietary Prober software. This base case was compared closely with the operation’s current Business Plan to ensure that all costs, revenues and operating parameters (particularly capacity limits at each stage of the value chain) had been captured correctly. Potential NPV improvements were then measured against the base case.In order to determine the potential benefits of each of the three mining mechanisms (scheduling, dynamic cut-off grade and strategic stockpiling) they were tested sequentially. The extensive experience of Whittle Consulting’s specialists was applied using Gemcom Whittle Four X software to prepare revised pit shells and phases with low initial stripping ratios, finer early phases and quicker access to high grade ore pockets. The three mining mechanisms were then applied again based on the revised pit designs. After this, simultaneous optimisation was applied with all of the mining mechanisms switched on.