# Relationship history for MSHA mine 5002020

Current hierarchy: **Jason  Otteson → Mammoth Valley Mining, LLC → Mammoth Valley Mining LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** NM Operations LLC → Mammoth Valley Mining LLC; 2014-06-02 to 2022-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Otteson → Mammoth Valley Mining LLC; 2014-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Otteson → NM Operations LLC; 2014-06-02 to 2022-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Todd R  Hoffman → Mammoth Valley Mining LLC; 2015-09-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** 316 Mining, LLC → Mammoth Valley Mining LLC; 2022-06-01 to 2026-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Todd R  Hoffman → 316 Mining, LLC; 2022-06-01 to 2026-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Mammoth Valley Mining, LLC → Mammoth Valley Mining LLC; 2026-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Otteson → Mammoth Valley Mining LLC; 2026-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Otteson → Mammoth Valley Mining, LLC; 2026-09-02 to current/open; source msha-controller-operator-history