The Cheviot, the Stag and the Black, Black Oil

The Cheviot, the Stag and the Black, Black Oil is a play written in the 1970s by Merseyside-born playwright John McGrath. From April 1973, beginning at a venue in Aberdeen (Aberdeen Arts Centre), it was performed in a touring production in community centres on Scotland by 7:84 and other community theatre groups.

Source: Wikipedia — The Cheviot, the Stag and the Black, Black Oil (CC BY-SA 4.0)