{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=Sand%20River%20Holdings%20LLC%3B%20AMS%20Southwest%20LLC","controller":"Sand River Holdings LLC; AMS Southwest LLC","_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":"2026-10-06T09:24:21.328Z"},"count":1,"truncated":false,"mines":[{"mine_id":"0203471","mine_name":"Coolidge Plant","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Active","state":"AZ","county_name":"Pinal","controller_name":"Sand River Holdings LLC; AMS Southwest LLC","operator_name":"Premier Materials Coolidge LLC","num_employees":9,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/0203471"}]}