Old Stone Mill NHS - The Delta Mill Society
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If you haven't been to the mill this year ... you haven't seen the mill. Graphic by Dan Moran

Let's Get Grinding
The Old Stone Mill is the oldest surviving automatic stone grist mill in Ontario. Now we need your help - a major fundraising effort is now underway to restore the mill to operational condition in time for its 200th anniversary in 2010. Read all about it on the Let's Get Grinding Page.

Old Stone Mill National Historic Site of CanadaThe Old Stone Mill in Delta Ontario is a National Historic Site showcasing milling technology and 1800s industrial heritage. The mill was built in 1810 and is one of the finest examples of early industrial architecture in the region.

A self-guided tour of the mill features interpretive displays, a full size breast wheel waterwheel, and artifacts illustrating the grist milling process through the years. Artifacts include buhr millstones, 48-inch Swain turbines, roller mills and much more.

In the Museum of Industrial Technology, the former Old Town Hall (just around the corner from the mill), the exhibits highlight some of the early industries of the region including early agricultural equipment. Small gift shops are located at both sites.




  • Location: In Delta (Cty Rd. 42), Ontario

  • Open: Daily from Victoria Day Weekend (Saturday) through to Labour Day weekend (Monday) from 10:00 a.m. – 5:00 p.m. Thereafter by appointment only.

  • Admission: Voluntary donation

  • 2009 Events: See Events Page

  • Information: Box 172, Delta, ON, K0E 1G0. Tel: 613-928-2584 (office) or call the museum during operating hours at: 613-928-2658. Email: info@deltamill.org

Please pay us a visit soon - we know that you will enjoy it!

Location Map

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We're Being Stamped!

The Old Stone Mill will be featured on a Canadian stamp in 2010

Part of a "flag over historic mills" definitive stamp series, you'll be able to buy these stamps at Canada Post outlets starting on January 12, 2010. The other mills in the series include: Keremeos Grist Mill (Keremeos BC), Cornell Mill (Stanbridge East QC), Watson’s Mill (Manotick ON) and the Riordon Grist Mill (Acadian Historic Village Caraquet NB)


Ontario Trillium Foundation Grant

Ontario Trillium FoundationThe Delta Mill Society is proud to announce that it is the recipient of an Ontario Trillium Foundation grant. This money will be used to hire staff, to develop and promote exhibits, programs and special events, as well as to recruit and train volunteers for the 2010 Bicentennial Celebration of the Old Stone Mill National Historic Site. For details see the News Release.

Parks Canada

The Old Stone Mill National Historic Site has been designated by the Government of Canada as a place of national historic significance. This place is part of the Family of National Historic Sites, one of more than 800 places across Canada which help define the important aspects of Canada's diverse but common heritage and identity. Further information on the National Historic Sites Program can be found at the Parks Canada website
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The Delta Mill Society   The Delta Mill Society
Box 172, Delta, Ontario K0E 1G0
Tel: 613-928-2584 (office)
Email: info@deltamill.org
The Delta Mill Society

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Website design & maintenance donated by: Ken Watson

Graphics design by Dan Moran and Ken Watson