# Relationship history for MSHA mine 3605466

Current hierarchy: **Iron Senergy Holding LLC → Iron Emerald LLC → Emerald Mine No 1**

- 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

- **controller_controls_mine:** Lykes Resources Inc → Emerald Mine No 1; 1975-01-01 to 1979-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Emerald Mines Corp → Emerald Mine No 1; 1975-02-12 to 1979-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Lykes Resources Inc → Emerald Mines Corp; 1975-02-12 to 1979-08-15; source msha-controller-operator-history
- **controller_controls_mine:** LTV Corporation → Emerald Mine No 1; 1978-12-05 to 1980-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Emerald Mines Corp → Emerald Mine No 1; 1979-08-16 to 1980-06-30; source msha-controller-operator-history
- **controller_controls_operator:** LTV Corporation → Emerald Mines Corp; 1979-08-16 to 1980-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Cyprus Emerald Resources Corp → Emerald Mine No 1; 1980-07-01 to 1999-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → Emerald Mine No 1; 1980-07-01 to 1999-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Cyprus Emerald Resources Corp; 1980-07-01 to 1999-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Emerald Coal Resources LP → Emerald Mine No 1; 1999-06-30 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Rag Aktiengesellschaft → Emerald Mine No 1; 1999-06-30 to 2004-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Rag Aktiengesellschaft → Emerald Coal Resources LP; 1999-06-30 to 2004-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Foundation Coal Corporation → Emerald Mine No 1; 2004-08-03 to 2009-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Foundation Coal Corporation → Emerald Coal Resources LP; 2004-08-03 to 2009-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Emerald Mine No 1; 2009-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Emerald Coal Resources LP; 2009-07-31 to 2016-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Iron Emerald LLC → Emerald Mine No 1; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Emerald Mine No 1; 2016-07-26 to 2020-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Iron Emerald LLC; 2016-07-26 to 2020-12-09; source msha-controller-operator-history
- **controller_controls_mine:** Iron Senergy Holding LLC → Emerald Mine No 1; 2020-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Iron Senergy Holding LLC → Iron Emerald LLC; 2020-12-10 to current/open; source msha-controller-operator-history