Choose a Walker Industries Company Walker Industries Holdings Limited Human Resources: Careers -- Walker Brothers Quarries Vineland Quarries & Crushed Stone Ridgemount Quarries Spring Creek Aggregates Georgian Aggregates & Construction Inc Norjohn Contracting and Paving Georgian Construction Walker Brothers Asphalt -- Woodington Systems Inc Niagara Waste Systems Limited Norjohn Transfer Systems Limited -- Infrastructure Development & Management (iDM) Integrated Gas Rescovery Services(IGRS) Integrated Municipal Services(IMS) -- Norjohn Emulsions Walker Community Development Corporation

	Ridgemount Quarries Limited owns and operates a crushed stone quarry located in the town of Fort Erie, Ontario. The quarry is approved for extraction of aggregate by the Ministry of Natural Resources (MNR). In addition the site holds permits from the Ministry of the Environment for taking water. Ridgemount Quarries uses professional consultants in conjunction with sound environmental management practices to ensure the protection and preservation of the surrounding environment.
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