The Colas Group is a quarrying and wharfing company operating a
number of Cornish quarries working igneous hard stone. We
transport a full range of valuable quarry products to the
geologically soft areas of the country; in particular, to the
strongly developing areas of the South East and along the south
coast. Of these products, single sized aggregates are used in
coastal stone coating plants.
West of England Quarry
From the West of England Quarry, a full range of dark green
diorite quarry products is shipped to third party wharves for use
in the construction industry. These products include: 0/4mm,
2/6.3mm, 4/10mm, 6.3/14mm, 10/20mm, 20/31.5mm and 20/40 mm graded
aggregate; Clause 803 Type 1, gabion stone, and rock armour. Rock
armour up to 10 tonnes in weight can be directly transported to
target beaches by barge and tug. Having an Apparent Particle
Density of 2.91Mg/m3, our material is ideal for this purpose.
The flexible quarry operation at West of England can prepare
material to customers' own specifications if required.
Our other quarry, Carnsew, is Cornwall's largest inland quarry.
Based on the edge of the Carnmenellis Granite intrusion, a silver
grey granite is produced in a full range of sizes including: 0/4mm,
2/6.3mm, 4/10mm, 6.3/14mm, 10/20mm, 20/31.5mm, 20/40mm; Type 1,
Crusher Run, scalpings of various sizes, gabion stone and rock
armour. The quarry contains stone coating and ready mix plants
supplying the local markets. Colas has shipped aggregates and
armour stone from this quarry via the nearby Port of Falmouth and
Carnsew Granite has been used in several rock armour projects along
the south coast.