Pre-stripping & site preparation
Overburden and rock removal to open a deposit, on jobs as large as an estimated 8 million cubic metres of rock drilled and blasted.

Development | Production | Quarrying
Sub-contractor Since 1982
We work on mines from the first development cut to closure: open pit production, road excavation, site preparation, drop-raising, shaft collaring, long-hole drilling, and quarrying for backfill and tailings dams.
We have done this work since 1982, most of it in the hard rock of the Canadian Shield.
Surface Development
Overburden and rock removal to open a deposit, on jobs as large as an estimated 8 million cubic metres of rock drilled and blasted.
Production drill and blast in open pit operations, with fragmentation and dilution control tuned to the mill downstream.
Collar excavation and drop-raise work to establish access, including shaft portions at 7 metres in diameter.
Haul road and access construction across rough northern terrain.
Backfill and tailings dam quarrying, plus limestone and granite production.
Surface long-hole programs, including more than 4,000 m of 4.5″ to 8″ holes on a recent Ontario job.
Scale
Surface production is a logistics problem as much as a drilling one. Bulk emulsion manufactured at or near the project cuts haul distances, reduces the number of times finished explosive is transferred, and keeps crews loading in cold weather and rough terrain.

Projects
Surface drilling and blasting at mines in Ontario.

Surface mining
Ontario · Surface drill & blast
Surface drill and blast on the Côté Gold mine development — one of the largest open-pit gold projects built in Canada in recent years.

Surface mining
Thunder Bay, Ontario · Surface drill & blast · 6 years
Surface drill and blast at the Lac des Îles mine, north-west of Thunder Bay — continuous work on site for the past six years.

Surface mining
Kirkland Lake, Ontario · Surface drill & blast · ongoing
Surface drill and blast at the Macassa mine in Kirkland Lake, Ontario.

Surface mining
Ontario · 2020–Present
An estimated 8 million cubic metres of rock to be drilled and blasted for pre-stripping and miscellaneous civil work.
Specialty Blasting
Spillways and dam raises are cut into rock right beside the structures they serve. We design to the vibration limit at the dam from measured data, monitor every blast, and report every result against the limit.

Tailings, dams & spillways
Near Bathurst, New Brunswick
New spillways cut into rock beside a tailings dam and its concrete spillway — 30 blasts under a 25 mm/s limit at the dam, every one independently monitored, the highest reading 37% of the limit.
View projectTailings, dams & spillways
Wayerton, New Brunswick
A new auxiliary spillway cut through rock near two tailings dams, held to 25 mm/s at the dam — designed from measured vibration data rather than textbook constants, and loaded with metered bulk emulsion.
View projectGoing Deeper
Since 2018, Consbec Mining + Tunneling has offered full underground contracting — development, production, ground support and shotcrete.
In the Field


