{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.ai-analytics.org/api/v1/msha/by-controller?name=Aurora%20County-SD","controller":"Aurora County-SD","_source":{"data_provider":"AI Analytics","data_provider_url":"https://api.ai-analytics.org","license":"https://creativecommons.org/publicdomain/zero/1.0/","primary_source":"https://arlweb.msha.gov/OpenGovernmentData/OGIMSHA.asp","generated_at":"2026-09-23T09:19:11.019Z"},"count":2,"truncated":false,"mines":[{"mine_id":"3900087","mine_name":"AURORA","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"SD","county_name":"Aurora","controller_name":"Aurora County-SD","operator_name":"Aurora County Highway Department","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.ai-analytics.org/mine/3900087"},{"mine_id":"3901108","mine_name":"Nielson Pit","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"SD","county_name":"Aurora","controller_name":"Aurora County-SD","operator_name":"Aurora County Highway Department","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.ai-analytics.org/mine/3901108"}]}