{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=Grayson%20County%20Sand%20and%20Gravel","controller":"Grayson County Sand and Gravel","_source":{"data_provider":"AI Analytics","brand_name":"MORVS","brand_url":"https://morvs.ai/","data_provider_url":"https://api.morvs.ai","license":"https://creativecommons.org/publicdomain/zero/1.0/","primary_source":"https://arlweb.msha.gov/OpenGovernmentData/OGIMSHA.asp","generated_at":"2026-10-05T08:29:43.341Z"},"count":1,"truncated":false,"mines":[{"mine_id":"4104521","mine_name":"Grayson County Sand & Gravel","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Active","state":"TX","county_name":"Grayson","controller_name":"Grayson County Sand and Gravel","operator_name":"Wildcatter Sand Services, LLC","num_employees":4,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/4104521"}]}