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standard · 4 March 2026
Biomass Storage in Subsurface Mines (BSSM) Module
Jurisdiction countryInternational
Instrument typecertification-protocol
Authorityregistry
PathwaysTerrestrial biomass burial/vaulting
Scopecarbon removal only
Statusoperational
DetailCertified module for storing sustainably sourced waste biomass in existing subsurface mines, designed to be used alongside the Subsurface Biomass Carbon Removal and Storage Protocol. Sets out requirements and procedures for storing biomass (such as cotton stalks or sawdust) in subsurface mine chambers to maintain stable temperatures and create low-oxygen conditions that slow or halt decomposition.
Stated statusoperational
Pathway scopespecific
Pathway notemodule for storing sustainably sourced waste biomass in existing subsurface mines to durably lock away carbon
Stated jurisdictionunknown
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