2020 May 20, Paul Clifton, “A hydrogen solution to decarbonisation?”, inRAIL, page54:
"The Tees Valley hasageing diesel trains that predate any form of emission control.
2021 October 20, Industry Insider, “The wheels turn slowly”, inRAIL, number942, page68:
These two events have exposed the road haulage industry as being reliant on a poorly paid andageing workforce, dependent on employees recruited from low-wage countries in Europe.
