{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=R%20B%20Aggregates-Gravel%20Inc","controller":"R B Aggregates-Gravel Inc","_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":"2026-10-05T03:50:20.739Z"},"count":1,"truncated":false,"mines":[{"mine_id":"2102992","mine_name":"R B No 1","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"MN","county_name":"Pine","controller_name":"R B Aggregates-Gravel Inc","operator_name":"R B Aggregates-Gravel Inc","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/2102992"}]}