Last updated 24 March 2024


Episode 2

Series Episode Number: 273

World Premiere: Sat 16 May 1970 - 5:16pm BST [BBC One] (United Kingdom)
First Broadcast: Thu 30 Oct 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 22 minutes 4 seconds

5.90 Million (UK)

Appreciation Index: 61 (UK)

Chart Position: 66 () (UK)

Recorded on Fri 24 Apr 1970 in TC3 / TC6
Archive State: RSC conver



The green slime oozing from the drill head is transforming men into monsters. Stahlman refuses to listen to the warnings and resorts to sabotage so that his project may continue.


Production Team hide uncredited
WriterDon Houghton
DirectorDouglas Camfield
ProducerBarry Letts
DesignerJeremy Davies
Script EditorTerrance Dicks
Film CameramanFred Hamilton
Film SoundGraham Hare
Film EditorMartyn Day
Visual Effects DesignerLen Hutton
Title MusicRon Grainer
and BBC Radiophonic Workshop
Action by HAVOC
CostumesChristine Rawlins (uncredited)
Make-upMarion Richards (uncredited)
Studio LightingJohn Green (uncredited)
Studio SoundJohn Staple (uncredited)
Special SoundBrian Hodgson (uncredited)
Technical ManagerRay Hider (uncredited)
Vision MixerJohn Gorman (uncredited)
Grams OperatorTony Philpott (uncredited)
Production AssistantChris D'Oyly-John (uncredited)
Assistant Floor ManagerSue Hedden (uncredited)
Floor AssistantFrank Mullan (uncredited)
Make-Up AssistantJudy Cain (uncredited)
Make-Up AssistantSue Duckworth (uncredited)
Make-Up AssistantIrene Walls (uncredited)
Scene CrewBrian Mitchell (uncredited)
Scene CrewBrian West (uncredited)
Costume AssistantTerry Styles (uncredited)
Costume AssistantPat Trigger (uncredited)
Film Camera AssistantHugh Miles (uncredited)
Film Sound AssistantJack Curtis (uncredited)
Director's AssistantSue Upton (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)