J.R. Weldon & Sons Enterprises Inc. was founded in 1988 by Reid and Ginny Weldon. We started out as a small aggregate processing company. In 2000 we were joined by two of our our sons Trever and Corey. Together they helped build the company into a successful family operated aggregate processing business. A few years later our youngest son Kristopher also joined in to help with the business.

J.R. Weldon and Sons specialize in screening and crushing projects, we have worked for various companies such as Lafarge Aggregates, Ontario Power Generation, Mattamy Homes and Hutchesons Sand and Gravel to name a few. We are skilled in producing custom and specialty aggregate products such as ball diamond mixes, and golf course sands. We also excel at crushing asphalt, concrete, as well as various other types of gravel products.

Weldon Aggregates Inc. was founded in 2000 by Reid and Ginny Weldon. Currently we operate two pits located in Durham Region. One Pit is located in Uxbridge Ontario and the other in Goodwood Ontario. Weldon Aggregates carry various types of material including specialty sands, granular products, limestone, and a variety of sized river rock.

Northfield Block & Gravel Supply Ltd. was purchased by Joe Assinck in the early 1960's. Joe Assinck was also the founder of Assinck Bros Ltd located in Markham. Until May of 2005 Northfield was managed by his son, the late David Assinck. After his death, the plant has been managed by Weldon Aggregates (part owner, Virginia Weldon who is the daughter and sister to Joe and David Assinck).

Northfield specializes in producing products such as specialty sands, colourful river rock of all sizes, and granular products.