# Relationship history for MSHA mine 4102239

Current hierarchy: **Joe  Mc Clellan → Metro Stone Company → Metro Stone**

- 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:** Redding Stone Company → Metro Stone; 1950-01-01 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Redding James R → Metro Stone; 1950-01-01 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Redding James R → Redding Stone Company; 1950-01-01 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Mc Clellan → Metro Stone; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Metro Stone Company → Metro Stone; 1983-07-26 to 1984-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Hines Lucien & Billy W Sportsman → Metro Stone; 1983-07-26 to 1985-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Hines Lucien & Billy W Sportsman → Metro Stone Company; 1983-07-26 to 1984-11-07; source msha-controller-operator-history
- **operator_operates_mine:** Metro Stone Company → Metro Stone; 1984-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Mc Clellan → Metro Stone Company; 1984-11-08 to current/open; source msha-controller-operator-history