Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Gresford Colliery:

"

After the General Strike, cost-cutting measures were introduced in all mines, including in safety provision. Five local collieries - Westminster, Wrexham & Acton, Vauxhall and Gatewen - shut in quick succession during the 1920s and 1930s.[2] Mechanisation, believed by the workers and unions to improve working conditions, created more dust and explosions, in an economic climate where the government were reluctant to enforce regulation.[1]