# Relationship history for MSHA mine 4103129

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

- **controller_controls_mine:** Joe  Mc Clellan → MELISSA PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Collin Rock Company Inc → MELISSA PIT; 1982-10-01 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alf M  Barnes → MELISSA PIT; 1982-10-01 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alf M  Barnes → Collin Rock Company Inc; 1982-10-01 to 1983-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Metro Stone Company → MELISSA PIT; 1983-07-26 to 1985-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Hines Lucien & Billy W Sportsman → MELISSA PIT; 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 1985-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Metro Stone Company → MELISSA PIT; 1985-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Mc Clellan → Metro Stone Company; 1985-11-20 to current/open; source msha-controller-operator-history