{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.ai-analytics.org/api/v1/msha/by-controller?name=Salt%20Lake%20County%20-%20Ut","controller":"Salt Lake County - Ut","_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":"2026-09-16T10:10:21.986Z"},"count":2,"truncated":false,"mines":[{"mine_id":"4200384","mine_name":"East Pit","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"UT","county_name":"Salt Lake","controller_name":"Salt Lake County - Ut","operator_name":"Salt Lake County Public Works","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.ai-analytics.org/mine/4200384"},{"mine_id":"4200890","mine_name":"Welby Pit ","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"UT","county_name":"Salt Lake","controller_name":"Salt Lake County - Ut","operator_name":"Salt Lake County Public Works","num_employees":0,"primary_canvass":"SandAndGravel","canonical_url":"https://api.ai-analytics.org/mine/4200890"}]}