# Coalbed methane { "id": "S85027414", "title": "Coalbed methane", "url": "/topics/S85027414", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "28a04b2525ffc05a", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "867088082061640196", "address_version": "morton4x16-v1", "coordinates": [ 0, 20, 17833, 22528 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Here are entered works on methane present in a stratum of coal. Works on methane as a combustible gas formed in coal mines are entered under [Firedamp.] Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh85027414 No owner-reviewed local answer yet.