# Relationship history for MSHA mine 1400551

Current hierarchy: **Peter E  Powell → Victory Sand & Gravel Inc → Victory Sand & Gravel Incorporated**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Martin Marietta Materials Inc → Victory Sand & Gravel Incorporated; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Victory Sand & Concrete Inc → Victory Sand & Gravel Incorporated; 1950-01-01 to 1979-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Victory Sand & Concrete Inc → Victory Sand & Gravel Incorporated; 1950-01-01 to 1979-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Victory Sand & Concrete Inc → Victory Sand & Concrete Inc; 1950-01-01 to 1979-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Corp → Victory Sand & Gravel Incorporated; 1979-04-01 to 1983-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Corp; 1979-04-01 to 1983-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Victory Sand & Gravel Inc → Victory Sand & Gravel Incorporated; 1983-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peter E  Powell → Victory Sand & Gravel Incorporated; 1983-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter E  Powell → Victory Sand & Gravel Inc; 1983-05-31 to current/open; source msha-controller-operator-history