Production & Distribution Network

Mississauga Cement Plant

The Mississauga Cement Plant is a proud and longstanding member of the community with a strong legacy. Along with the Ogden Point Quarry, we employ approximately 200 people, many of whom live in the area. Our employees are proud to be a part of the Ash Grove North team.

Operating for More Than 60 Years

In operation since 1956, the Mississauga Cement Plant continues to put their best foot forward in providing the best quality products for their customers.

Over 200 Employees

We believe that what sets us apart is the value added services that we provide. Our team of experts assist our customers with troubleshooting and resolution of technical issues, testing, mix designs, specification interpretation; and, specialty product development requirements.

Corporate Social Responsibility (CSR) is an important mindset that is firmly embedded throughout our company. We have a long-standing commitment to the communities where our facilities are located.

Tour Group

Engaging with local stakeholders is a critical component of our efforts to contribute to improving the quality of life in the communities around our operations ‐ to learn from their experiences, as well as share our own; to consider stakeholders’ input as part of our decision-making processes; and to keep local stakeholders involved in planning and managing our efforts.

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Ashgrove North group Photo

Ogden Point Quarry is located 160 km east of Toronto in Colborne, Ontario. This limestone quarry has been in operation since 1959 and covers 685 acres. The limestone quarried at this site is shipped to Ash Grove North’s Mississauga Cement Plant as one of the key components in the manufacturing of cement.

Ogden Point Quarry is a large geological formation representing over 100 years of resources in reserve with depth of the ore formation of 152 meters.

Our Process
The limestone rock is obtained through blasting which requires drilling the limestone face with holes 15 meters deep.
Drills are specially designed to reduce dust emissions while drilling, and the blast design helps to control ground and air vibration.
Approximately 40,000 tonnes of rock are loosened with each blast.
Free stone is then transported via 70-tonne haul trucks to the 137cm gyratory crusher which crushes the stone at a crushing rate of 1,500 tonnes per hour.
Large pieces of limestone are crushed to approximately 15-20cm in diameter.
This material is then moved on a conveyor to our dock for loading onto lake ships. Lakers take approximately 24 hours round trip, to transport about 18,000 to 19,500 tonnes of stone once they’re loaded.
During the shipping season (April to December), the lakers are dedicated solely to the transport of limestone between the quarry and the Mississauga Plant.
The entire manufacturing process — from blasting and extraction to shipping — is monitored for environmental, process and quality parameters. Each blast is monitored to verify that ground vibrations and air pressure readings are below guidelines.
Ash Grove North employs 21 people at its Ogden Point Quarry and over 150 at its Mississauga Plant representing a wide range of skills. Health and safety is of paramount importance at Ash Grove North. The health and safety advisor and safety committee work closely together to provide a safe working environment for all employees.

At Ash Grove North, we strive to continuously improve our environmental performance, provide meaningful contributions to the communities we operate in and work closely with our neighbours and partners to contribute to a more lively and connected community. Through local partnerships and our corporate social responsibility program, we are committed to improving our communities, together.

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1-800-561-1076 (450-651-1076)