General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 622685 Steven Baker null 702-540-2787 null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 487446 MP Mine Operations LLC Organization Legally Responsible Official 03/11/2021 null Privately-Owned Business Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Violations within the past calendar year Violation ID Occurrence Date Violation Type Violation Description Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked To Enf. Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status 454473 MP Mine Operations LLC Enrollee - WDR CERFILLEXC 03/18/2024 Active 388260 MP Mine Operations LLC Enrollee - WDR WDRMUNIENROTH 11/07/2012 Active 377626 MP Mine Operations LLC WDR LNDISPOTH 10/14/2010 Active 376674 MP Mine Operations LLC Enrollee - 401 Certification CERFILLEXC 12/02/2010 Historical 306717 MP Mine Operations LLC WDR LFNONOPER 06/14/2006 Active 148025 MP Mine Operations LLC WDR WDRMUNIOWTS 04/11/2001 Historical 148001 MP Mine Operations LLC WDR LNDISPOTH 09/14/2000 Active 145895 MP Mine Operations LLC WDR LNDISP 06/13/1991 Historical 133369 MP Mine Operations LLC WDR LNDISPOTH 04/14/2005 Active 132920 MP Mine Operations LLC WDR LNDISPOTH 10/14/2004 Active