A derelict soil is a soil that has been damaged by industrial or other development activity, and which is currently unused. It may usually be brought back to use only after soil remediation[?].
... Graham Hill, (United Kingdom)
1965 - Graham Hill, (United Kingdom)
1966 - Jackie Stewart[?], (United Kingdom)
1967 - Denny Hulme[?], (New Zealand)
1968 - Graham Hill, ...