# Relationship history for MSHA mine 5002031

Current hierarchy: **Shanna  Squires-Roderick → R/C Land Improvement → Cone Lichen Roderick Pit**

- 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:** R/C Land Improvement → Cone Lichen Roderick Pit; 2015-04-27 to 2019-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Marc A Roderick → Cone Lichen Roderick Pit; 2015-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marc A Roderick → R/C Land Improvement; 2015-04-27 to 2019-04-02; source msha-controller-operator-history
- **operator_operates_mine:** R/C Land Improvement → Cone Lichen Roderick Pit; 2019-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shanna  Squires-Roderick → Cone Lichen Roderick Pit; 2019-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shanna  Squires-Roderick → R/C Land Improvement; 2019-04-03 to current/open; source msha-controller-operator-history