{"@context":{"@vocab":"https://schema.org/"},"@type":"ItemList","@id":"https://api.morvs.ai/api/v1/msha/by-controller?name=Olson%20Roger%20Emil","controller":"Olson Roger Emil","_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":"2026-09-30T22:25:20.662Z"},"count":2,"truncated":false,"mines":[{"mine_id":"2101472","mine_name":"North Farm","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"MN","county_name":"Freeborn","controller_name":"Olson Roger Emil","operator_name":"Emil Olson Inc","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/2101472"},{"mine_id":"2101832","mine_name":"Dunbar Pit And Mill","coal_metal_ind":"M","mine_type":"Surface","mine_status":"Abandoned","state":"MN","county_name":"Freeborn","controller_name":"Olson Roger Emil","operator_name":"Emil Olson Inc","num_employees":null,"primary_canvass":"SandAndGravel","canonical_url":"https://api.morvs.ai/mine/2101832"}]}