CH4 (disambiguation)
From Infogalactic: the planetary knowledge core
CH4 most commonly refers to the chemical compound methane.
It may also refer to:
- a postcode subdistrict of Chester, United Kingdom
- the METHANE emergency service mnemonic
- the CH-4 variant of the Cessna CH-1 Skyhook helicopter
- the CH-4 variant of the CASC Rainbow unmanned aerial vehicle
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