https://olddoctorwho.com/episodes/fourth-doctor-1974-81/seeds-doom-1976-s12-e66/
The Classic Era Of Old Dr Who Covered
Fourth Doctor Episodes The Seeds Of Doom – 1976 – S12 – E6/6 Season 12, serial 6 of 6.
Compost room crusher scenes:
Watch 085 The Seeds of Doom Part 6/6 - TARDIS Archive on Dailymotion
My favorite earth metal
at 7:28 minutes and 14:02 minutes
"Of course, Chase is also remembered for his horrific use of his giant composter; which he uses to ruthlessly dispose of his enemies, by grinding them up – into garden fertilizer."
085 The Seeds of Doom by TARDIS Archive - dailymotion
https://www.dailymotion.com/playlist/x5waiz