Tunnel Portland Cement Company Ltd

A British cement maker that built Pitstone as its first purpose-built works in 1937; it became Tunnel Cement Ltd in 1968 and its plants passed to Castle Cement in 1986.

Mines operated

Mine	Region	Years
Pitstone Chalk Quarry and Cement Works	Buckinghamshire	1937–1968

Record created: 25 August 2026 · Last researched: 25 August 2026