# Relationship history for MSHA mine 3303353

Current hierarchy: **Nowak Raymond J → Mudsock Mining Inc → Mudsock Strip**

- 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:** Mudsock Mining Inc → Mudsock Strip; 1975-08-01 to 1978-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Pierce Construction Company → Mudsock Strip; 1975-08-01 to 1978-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Pierce Construction Company → Mudsock Mining Inc; 1975-08-01 to 1978-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Mudsock Mining Inc → Mudsock Strip; 1978-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nowak Raymond J → Mudsock Strip; 1978-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nowak Raymond J → Mudsock Mining Inc; 1978-11-15 to current/open; source msha-controller-operator-history