{"name":"Castle Minerals Drilling Activity in Alameda County, California","publisher":"Buckhead Energy","url":"https://www.buckheadenergy.com/operators/castle-minerals/california/alameda","license":"https://creativecommons.org/licenses/by/4.0/","dataAsOf":"2026-08-06","source":"Public state oil & gas well-header records (permits, spuds, completions).","operator":"Castle Minerals","operatorSlug":"castle-minerals","state":"CA","county":"Alameda","totalWells":4,"producingWells":1,"permits24mo":0,"spuds24mo":0,"ducCount":3,"topFormation":null,"rankInCounty":3,"firstPermitDate":"1972-03-02","lastPermitDate":"1983-12-24"}