{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.ai-analytics.org/api/v1/msha/by-controller?name=Material%20Suppliers","controller":"Material Suppliers","_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":"2026-09-23T15:27:55.282Z"},"count":1,"truncated":false,"mines":[{"mine_id":"1202451","mine_name":"Stafford Gravel Inc","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Active","state":"IN","county_name":"De Kalb","controller_name":"Material Suppliers","operator_name":"Stafford Gravel Inc","num_employees":6,"primary_canvass":"SandAndGravel","canonical_url":"https://api.ai-analytics.org/mine/1202451"}]}