# Relationship history for MSHA mine 1519863

Current hierarchy: **Marian  Hicks; Jeffrey  Hicks → Raven Coal, LLC → Island Creek 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:** Thomas B  Ratliff → Island Creek 1; 1978-09-01 to 2019-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Austin B  Kirk et al → Island Creek 1; 2019-02-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Landmark Mining Company, Inc. → Island Creek 1; 2019-06-20 to 2019-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  Ratliff → Island Creek 1; 2019-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Ratliff → Landmark Mining Company, Inc.; 2019-06-20 to 2019-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Thomas B  Ratliff → Landmark Mining Company, Inc.; 2019-06-20 to 2019-06-19; source msha-controller-operator-history
- **operator_operates_mine:** Raven Coal LLC → Island Creek 1; 2019-11-08 to 2022-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey  Hicks et al → Island Creek 1; 2019-11-08 to 2022-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Hicks et al → Raven Coal LLC; 2019-11-08 to 2022-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Marian  Hicks et al → Raven Coal LLC; 2019-11-08 to 2022-01-09; source msha-controller-operator-history
- **controller_controls_operator:** David  Ison et al → Raven Coal LLC; 2019-11-08 to 2022-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Amber Lea Contractors, LLC → Island Creek 1; 2022-01-10 to 2022-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Austin B  Kirk et al → Amber Lea Contractors, LLC; 2022-01-10 to 2022-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Tim B  Young et al → Amber Lea Contractors, LLC; 2022-01-10 to 2022-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Raven Coal, LLC → Island Creek 1; 2022-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marian  Hicks et al → Raven Coal, LLC; 2022-03-08 to 2022-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Hicks et al → Raven Coal, LLC; 2022-03-08 to 2022-03-07; source msha-controller-operator-history
- **controller_controls_operator:** David  Ison et al → Raven Coal, LLC; 2022-03-08 to 2022-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Marian  Hicks et al → Island Creek 1; 2022-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marian  Hicks et al → Raven Coal LLC; 2022-03-08 to 2022-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Hicks et al → Raven Coal LLC; 2022-03-08 to 2022-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Hicks et al → Raven Coal, LLC; 2022-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marian  Hicks et al → Raven Coal, LLC; 2022-03-08 to current/open; source msha-controller-operator-history