# Relationship history for MSHA mine 4703221

Current hierarchy: **Tony  Smith → Stone & Boulder → Stone & Boulder**

- 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:** Russell  Geiter → Stone & Boulder; 1980-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Geiter Construction Inc → Stone & Boulder; 1999-10-01 to 2005-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Russell  Geiter → Geiter Construction Inc; 1999-10-01 to 2005-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Stone & Boulder → Stone & Boulder; 2005-05-02 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Mike I Boney et al → Stone & Boulder; 2005-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike I Boney et al → Stone & Boulder; 2005-05-02 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Kevin R  Boney et al → Stone & Boulder; 2005-05-02 to 2022-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Stone & Boulder → Stone & Boulder; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tony  Smith → Stone & Boulder; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tony  Smith → Stone & Boulder; 2023-01-01 to current/open; source msha-controller-operator-history