# Relationship history for MSHA mine 4609540

Current hierarchy: **Corbin  Robertson III → Quinwood Coal Company → Hominy #1 Surface Mine**

- 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

- **operator_operates_mine:** Quinwood Coal Company, LLC → Hominy #1 Surface Mine; 2017-06-13 to 2018-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Corbin  Robertson III → Hominy #1 Surface Mine; 2017-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Corbin  Robertson III → Quinwood Coal Company, LLC; 2017-06-13 to 2018-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Harlowe MIA Mining Corp. → Hominy #1 Surface Mine; 2018-10-09 to 2019-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Kenny  Spangler → Hominy #1 Surface Mine; 2018-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenny  Spangler → Harlowe MIA Mining Corp.; 2018-10-09 to 2019-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Quinwood Coal Company → Hominy #1 Surface Mine; 2019-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Corbin  Robertson III → Quinwood Coal Company; 2019-03-12 to current/open; source msha-controller-operator-history