{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=R%20%26%20A%20Sand%20%26%20Concrete","controller":"R & A Sand & Concrete","_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":"2026-10-04T16:39:47.714Z"},"count":1,"truncated":false,"mines":[{"mine_id":"1301929","mine_name":"Ramsey Pit","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"IA","county_name":"Madison","controller_name":"R & A Sand & Concrete","operator_name":"R & A Sand & Concrete","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/1301929"}]}