# Relationship history for MSHA mine 3002474

Current hierarchy: **Loretta J  Spezio → Elam Sand & Gravel Corp → SCOTTSVILLE 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:** Spezio Sand & Gravel → SCOTTSVILLE PIT; 1980-01-01 to 1981-11-17; source msha-controller-operator-history
- **controller_controls_mine:** Frank  Spezio → SCOTTSVILLE PIT; 1980-01-01 to 1981-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Spezio → Spezio Sand & Gravel; 1980-01-01 to 1981-11-17; source msha-controller-operator-history
- **operator_operates_mine:** Elam Sand & Gravel Corp → SCOTTSVILLE PIT; 1981-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Spezio → SCOTTSVILLE PIT; 1981-11-18 to 2013-05-05; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Spezio → Elam Sand & Gravel Corp; 1981-11-18 to 2013-05-05; source msha-controller-operator-history
- **controller_controls_mine:** Loretta J  Spezio → SCOTTSVILLE PIT; 2013-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loretta J  Spezio → Elam Sand & Gravel Corp; 2013-05-06 to current/open; source msha-controller-operator-history