# Relationship history for MSHA mine 4609545

Current hierarchy: **Appalachian Resource Company LLC → APPALACHIAN RESOURCE WEST VIRGINIA, LLC → CAM HIGHWALL MINER**

- 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:** Wexford Capital LLC → CAM HIGHWALL MINER; 2003-05-12 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Rhino Resource Partners LP → CAM HIGHWALL MINER; 2010-10-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CAM Mining LLC → CAM HIGHWALL MINER; 2017-10-23 to 2020-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Wexford Capital LLC → CAM Mining LLC; 2017-10-23 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Rhino Resource Partners LP → CAM Mining LLC; 2017-10-23 to 2020-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Resource West Virginia, LLC → CAM HIGHWALL MINER; 2020-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Appalachian Resource Company LLC → CAM HIGHWALL MINER; 2020-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Appalachian Resource Company LLC → Appalachian Resource West Virginia, LLC; 2020-09-01 to current/open; source msha-controller-operator-history