You are here: Home / Contact Us

Contact Us

Open Aggregates is operated by Greycoat Software. Greycoat Software does not own or operate any of the listed aggregate sites.

To be added to the Open Aggregates newsletter click here.

Own or Operate a Pit or Quarry?
Fill out the owner form (or email or call) to update your listing and be included in our product finder.

Looking for a phone number for a company, pit, or quarry that is not listed on Open Aggregates?
Try our beta app to lookup contact phone numbers and product availability at

Need to reach Greycoat Software?
Contact Greycoat Software
by phone (519) 746-6666
or e-mail

Office Address:
7-12 Dupont St. W.
Waterloo ON, Canada
N2L 2X6
(43.466116°N, -80.523287°W)

Mailing Address:
P.O. Box 42041
550 King St. North
Waterloo, ON
N2L 6K5

You can also find us on the following social media platforms:

Twitter:@OpenAggregates and @GreycoatSW