Artificially stimulated. high-yield microbial production of methane from coal is a challenging problem that continues to generate research interest. Decomposition of organic matter and production of methane from coal are the results of multiple redox reactions carried out by different communities of bacteria and archaea. Recent work by our group (Beckmann et al. https://www.pomyslnaszycie.com/rivet-sweat-charcoal-on-sale/