# Relationship history for MSHA mine 1516098

Current hierarchy: **Jesse R  Sizemore; Amy R  Sizemore → Black Mountain Resources, LLC → Falcon**

- 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:** Sunoco, Inc. → Falcon; 1979-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shamrock Coal Company Inc → Falcon; 1987-07-01 to 1998-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Sunoco, Inc. → Shamrock Coal Company Inc; 1987-07-01 to 1998-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Shamrock Coal Company Inc → Falcon; 1998-10-01 to 2014-12-29; source msha-controller-operator-history
- **controller_controls_mine:** James River Coal Company → Falcon; 1998-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James River Coal Company → Shamrock Coal Company Inc; 1998-10-01 to 2014-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → Falcon; 2009-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Blackjewel L.L.C. → Falcon; 2014-12-30 to 2019-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Blackjewel L.L.C.; 2014-12-30 to 2019-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Amy R  Sizemore et al → Falcon; 2019-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Mountain Resources, LLC → Falcon; 2019-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amy R  Sizemore et al → Black Mountain Resources, LLC; 2019-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jesse R  Sizemore et al → Black Mountain Resources, LLC; 2019-10-24 to current/open; source msha-controller-operator-history