{"carrier":{"dot_number":"21207","legal_name":"HEEREN TRUCKING CO INC","dba_name":"","entity_type":"AUTHORIZED FOR HIRE","operating_status":"AUTHORIZED FOR HIRE","phy_street":"114 2ND STREET EAST","phy_city":"LEMMON","phy_state":"SD","phy_zip":"57638","phy_country":"US","phone":"6053743844","mc_number":"MC-1150","mc_number_2":"","mc_number_3":"","carrier_operation":"A","hm_indicator":"Y","power_units":3,"total_drivers":3,"total_cdl":3,"mcs150_mileage":180000,"mcs150_mileage_year":"2021","mcs150_date":"20230309 0000","add_date":"19740601","officer_1":"MICHAEL MIZERA","officer_2":"","fleet_size_class":"B","business_type":"CORPORATION","duns_number":"6868376","crash_rate":0,"prior_revoke_flag":"N","prior_revoke_dot":"","cargo_types":"C","source":"census","ingested_at":"2026-05-16 01:35:37","updated_at":"2026-05-16 01:35:37"},"crashes":{"total":0,"fatal":null,"injury":null},"safety_scores":[]}