[2] Tilcon's operations in Connecticut were threatened by Amtrak's electrification project on the Northeast Corridor between New Haven and Boston in 1994.

[3] Tilcon's president said at the time that "It would knock us out of business or limit freight service to the point that we would lose hundreds of jobs.

[5] A major rock quarry is operated by Tilcon in North Branford, Connecticut.

The company owns and operates the Branford Steam Railroad which exports rock from the quarry.

In 2018, the company's attempt to expand its quarry on additional land owned by the city of New Britain was denied by mayor Erin Stewart over concerns of environmental impact.