# Relationship history for MSHA mine 4801846

Current hierarchy: **Chris M Kusilek; Dianna J Kusilek → Ramsey Hill Exploration LLC → McGee 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Tim  Fallon et al → McGee Mine; 2015-04-06 to 2019-03-04; source msha-controller-operator-history
- **controller_controls_mine:** Dianna J Kusilek et al → McGee Mine; 2019-03-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ramsey Hill Exploration LLC → McGee Mine; 2021-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Fallon et al → Ramsey Hill Exploration LLC; 2021-04-22 to 2019-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Peter  Venuta et al → Ramsey Hill Exploration LLC; 2021-04-22 to 2019-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Dianna J Kusilek et al → Ramsey Hill Exploration LLC; 2021-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris M Kusilek et al → Ramsey Hill Exploration LLC; 2021-04-22 to current/open; source msha-controller-operator-history