{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.ai-analytics.org/api/v1/msha/by-controller?name=Hartman%20Harold","controller":"Hartman Harold","_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":"2026-09-04T08:46:16.474Z"},"count":1,"truncated":false,"mines":[{"mine_id":"1300050","mine_name":"Harold Hartman Quarry","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"IA","county_name":"Clayton","controller_name":"Hartman Harold","operator_name":"Harold Hartman","num_employees":null,"primary_canvass":"Stone","canonical_url":"https://api.ai-analytics.org/mine/1300050"}]}