# Relationship history for MSHA mine 4609347

Current hierarchy: **Ramsey Acquisition LLC → Performance Industries Inc → London Magnetite**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Hazy Ridge Coal Company → London Magnetite; 2009-08-25 to 2025-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → London Magnetite; 2009-08-25 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Hazy Ridge Coal Company; 2009-08-25 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → London Magnetite; 2014-01-27 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Hazy Ridge Coal Company; 2014-01-27 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → London Magnetite; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Hazy Ridge Coal Company; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → London Magnetite; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Hazy Ridge Coal Company; 2018-11-09 to 2025-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Donald R  McClung et al → London Magnetite; 2020-01-14 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ramsey Acquisition LLC → London Magnetite; 2024-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Performance Industries Inc → London Magnetite; 2025-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald R  McClung et al → Performance Industries Inc; 2025-05-16 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Scott W  Sparks et al → Performance Industries Inc; 2025-05-16 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Ramsey Acquisition LLC → Performance Industries Inc; 2025-05-16 to current/open; source msha-controller-operator-history