Consbec Mining + Construction
A surface blast lifting rock at an open pit mine

Surface Mining

Development | Production | Quarrying

Sub-contractor Since 1982

From first cut to final closure

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

What surface work looks like

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.

Open pit mining

Production drill and blast in open pit operations, with fragmentation and dilution control tuned to the mill downstream.

Shaft collaring & drop-raising

Collar excavation and drop-raise work to establish access, including shaft portions at 7 metres in diameter.

Road & access excavation

Haul road and access construction across rough northern terrain.

Quarrying

Backfill and tailings dam quarrying, plus limestone and granite production.

Long-hole drilling

Surface long-hole programs, including more than 4,000 m of 4.5″ to 8″ holes on a recent Ontario job.

Scale

Large volumes

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.

Recent pre-strip
8M m³
Long-hole drilled
4,000 m+
Hole sizes
2″–15″
Discuss a project
Excavator loading broken rock at a mine site

Projects

Open pit and site preparation

Surface drilling and blasting at mines in Ontario.

  • Aerial view of an open pit with a blast in progress

    Surface mining

    Côté Gold

    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.

  • A surface drill rig working on exposed rock under a stormy sky

    Surface mining

    Lac des Îles Mine

    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.

  • A surface drill rig working in snow and fog

    Surface mining

    Macassa Mine

    Kirkland Lake, Ontario · Surface drill & blast · ongoing

    Surface drill and blast at the Macassa mine in Kirkland Lake, Ontario.

  • Quarry face with drilling and loading fleet during site preparation

    Surface mining

    Mine Site Preparation

    Ontario · 2020–Present

    An estimated 8 million cubic metres of rock to be drilled and blasted for pre-stripping and miscellaneous civil work.

Going Deeper

Underground mine contracting

Since 2018, Consbec Mining + Tunneling has offered full underground contracting — development, production, ground support and shotcrete.

Explore underground

In the Field

Surface work

Aerial view of an open pit with a blast in progress
Site Preparation
Bulk explosive pumper trucks staged in a snowy quarry
Bulk Pumpers
A jumbo drill working a development heading
Mine Development