{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=Higgins%20Walter%20R","controller":"Higgins Walter R","_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":"2026-11-02T17:24:28.271Z"},"count":1,"truncated":false,"mines":[{"mine_id":"0402636","mine_name":"Chino Plant","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"CA","county_name":"Los Angeles","controller_name":"Higgins Walter R","operator_name":"Higgins Brick Company","num_employees":null,"primary_canvass":"Nonmetal","canonical_url":"https://api.morvs.ai/mine/0402636"}]}