# Relationship history for MSHA mine 4102813

Current hierarchy: **Rodolfo  Garcia → Laredo Sand & Gravel → Clark 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:** H E Reeves Inc → Clark Pit; 1979-01-01 to 1982-09-27; source msha-controller-operator-history
- **controller_controls_mine:** Reeves H E → Clark Pit; 1979-01-01 to 1982-09-27; source msha-controller-operator-history
- **controller_controls_operator:** Reeves H E → H E Reeves Inc; 1979-01-01 to 1982-09-27; source msha-controller-operator-history
- **operator_operates_mine:** Victor M Solis Ready Mix → Clark Pit; 1982-09-28 to 1987-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Solis Victor M → Clark Pit; 1982-09-28 to 1987-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Solis Victor M → Victor M Solis Ready Mix; 1982-09-28 to 1987-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Rodolfo  Garcia et al → Clark Pit; 1984-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bravo Materials Inc → Clark Pit; 1987-06-01 to 1989-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Gloria B  Solis → Clark Pit; 1987-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gloria B  Solis → Bravo Materials Inc; 1987-06-01 to 1989-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Laredo Sand & Gravel → Clark Pit; 1989-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodolfo  Garcia et al → Laredo Sand & Gravel; 1989-05-23 to current/open; source msha-controller-operator-history