DMC Mining Services (DMC) operates from its main office in Richmond Hill, Ontario with the US operations based in Salt Lake City, Utah. A Canadian field operations office and shop is located in Val Caron, Ontario.
Health, Safety & Environment
DMC is the only North American ISO 9001 and OHSAS 18001 certified mining contractor. Safety programs currently in place include first aid and CPR training, supervisor development programs, job specific training and the 5 point safety system.
An E-Learning program is being rolled out in the USA offering an orientation module, 32 hour MSHA training and an 8 hour MSHA refresher training for on site and remote access. A similar program will be developed for Canadian operations in 2010.
Contract Mining Services
Contract mining is a form of outsourcing whereby a project owner retains an outside contractor to conduct all or a portion of mine development and operations. In providing contract mining services, DMC draws upon its broad range of disciplines:
Where it assumes responsibility for mine operation, DMC hires staff, develops production budgets and schedules, produces reports, maintains regulatory permits and filings, manages operating staff and assumes overall responsibility for safety and loss control.
Mine Shaft Sinking
Mine shaft sinking is one of the most critical and technically difficult aspects of underground mine development and construction. A mine shaft must be completed and commissioned for a deep mine before any other underground mine development can commence. Accordingly, mine owners place a premium on rapid sinking schedules. DMC possesses the highly-skilled shaft sinking crews and the specialized techniques and equipment necessary to meet the requirements and schedules of technically difficult projects such as those involving poor ground conditions or extreme depth. DMC's expertise in mine shaft sinking is based on more than 100 years of combined manpower experience. During this time DMC has continuously worked to develop technical improvements, the most significant of which is the patented Long Round Jumbo technology which involves a process for blasting 5 meter long shaft rounds and which has materially increased the speed at which shafts can be completed.
Mine Development
Lateral mine development involves the excavation of access ramps and declines and the excavation of drifts and crosscuts leading to the ore body. Management believes the expertise in mineshaft sinking has allowed it to capture lateral development work through a bundling of services.
Mine Construction
DMC's mine construction services involve numerous specialized activities related to both surface and underground mine construction. The mine construction work has also included:
Civil Construction
DMC also provides services to customers in the civil underground construction industry. DMC has completed an underground powerhouse excavation, penstock excavation and tailrace tunnel excavation for a mini-hydro project and ground stabilization and construction work for The Sudbury Neutrino Observatory. DMC completed work on a hydroelectric tunnel rehabilitation project, as well as establishing a freshwater reservoir and collection system for a resort by the installation of a concrete bulkhead and piping system in an adjacent abandoned mine. DMC also constructed a pedestrian walkway and utility tunnel under a main street in downtown Salt Lake City.
Raise Boring and Raise Excavation
Raise boring is a continuous, mechanical method of boring vertical, or near vertical openings used for ventilation, manways, and ore and waste transportation for operating mines. Raise boring techniques are also used to excavate various raises and shafts for civil construction projects. Raise boring is a substitute for traditional raise excavation methods and has a number of advantages that make it preferable in certain applications. In particular, raise boring leaves smooth walls allowing for more efficient ventilation. Raise bored holes can also be used for hoisting or egress shafts. Raise boring is generally considered a safer, faster and more cost effective means of excavating raises than more traditional drilling and blasting methods.
DMC has a fleet of 10 raise boring machines, over 7,500 feet of drill pipe and 16 reamers with capabilities from 28 inch to 20 feet in diameter. The smallest drills operate in only 12 feet of headroom. Our raise drills have also been used to install an 8 inch paste fill line and a 7 foot by 1,100 foot steel liner with a combined hanging weight of 1,000,000 lbs. Since 1982 DMC has reamed over 250,000 feet domestically and internationally. DMC owns and operates a fleet of mechanized raise climbers which provide our customers with options for those applications where it is preferable.
Engineering Services
DMC's evaluation and design services include concept, pre-feasibility and technical engineering. Our technical engineering capabilities cover all the major disciplines (mining, civil, electrical, structural and mechanical).
Concept & Pre-feasibility Studies
Our studies include elements such as:
Technical Engineering
DMC provides technical engineering services to assess and optimize mining projects.
As operators and engineers, our services are founded on practical operating procedures and sound engineering standards. Our expertise includes:
For further information on DMC's services visit www.dmcmining.com or contact John Marrington, Senior Vice President and General Manager, DMC Mining Services, 9555 Yonge Street, Suite 200, Richmond Hill, Ontario, Canada, L4C 9M5, jmarrington@dmcmining.com, tel 905-780-1980 or fax 905-780-1990.