# Relationship history for MSHA mine 1001359

Current hierarchy: **Clay Bob → Audyne U S A Inc → New York**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Shamrock Mining Company → New York; 1978-03-09 to 1980-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Hunter Bob & Don Petersen → New York; 1978-03-09 to 1980-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Hunter Bob & Don Petersen → Shamrock Mining Company; 1978-03-09 to 1980-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Havilah Mining Ltd → New York; 1980-09-01 to 1983-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Havilah Mining Ltd → New York; 1980-09-01 to 1983-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Havilah Mining Ltd → Havilah Mining Ltd; 1980-09-01 to 1983-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Clay Bob → New York; 1983-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Audyne U S A Inc → New York; 1983-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clay Bob → Audyne U S A Inc; 1983-07-11 to current/open; source msha-controller-operator-history