# Relationship history for MSHA mine 4502054

Current hierarchy: **Lewis County-Wa → Lewis County-Department Of Public Works → BUNKER QUARRY**

- 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:** Mario A  Segale et al → BUNKER QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lewis County-Department Of Public Works → BUNKER QUARRY; 1950-01-01 to 1983-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Lewis County-Wa → BUNKER QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis County-Wa → Lewis County-Department Of Public Works; 1950-01-01 to 1983-01-31; source msha-controller-operator-history
- **operator_operates_mine:** M A Segale Inc → BUNKER QUARRY; 1983-02-01 to 1984-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Mario A  Segale et al → M A Segale Inc; 1983-02-01 to 1984-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Mark A  Segale et al → M A Segale Inc; 1983-02-01 to 1984-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Lewis County-Department Of Public Works → BUNKER QUARRY; 1984-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis County-Wa → Lewis County-Department Of Public Works; 1984-01-17 to current/open; source msha-controller-operator-history