A list of companies offering group and school tours:

St. Marys Cement/CBM Aggregates
Aggregates: John Moroz
416-696-4430
County/Region: Southern Ontario

Cement: Wilson Little
905-623-1722 ext. 223
County/Region: Southern Ontario

Cruickshank Construction (Kingston) Limited.
Robert White
613-542-2874
County/Region: Frontenac, Kingston

Dufferin Aggregates
905-532-3231
County/Region: Southern Ontario

Frank Kling Limited
Jim McCann
519-527-0297
County/Region:

Harold Sutherland Construction Ltd.
Jennifer Prentice
519-376-5698
County/Region: Grey

James Dick Construction Limited
Greg Sweetnam
905-857-3500
County/Region: Peel

Lafarge Canada Inc.
Robert Guay
905-768-3353
County/Region: Haldiman/Norfolk

Nelson Aggregate Co.
Steve Drew
905-335-5250
County/Region: Niagara

Nelson Aggregate Co.
Chris Roote
705-325-2264
County/Region: Simcoe

Steed and Evans Limited
Malcolm Matheson
519-744-7315
County/Region: Waterloo

Walker Industries Holdings Limited
Teresa Page
905-227-4142
County/Region: Niagara