# Relationship history for MSHA mine 4608124

Current hierarchy: **Strawser Raymond → Sequoia Mining Company → No 1**

- 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:** Wayco Limited Partnership No 1 → No 1; 1992-01-01 to 1993-03-09; source msha-controller-operator-history
- **controller_controls_mine:** James O  Bunn  et al → No 1; 1992-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James O  Bunn  et al → Wayco Limited Partnership No 1; 1992-01-01 to 1993-03-09; source msha-controller-operator-history
- **controller_controls_operator:** Franklin D  Robertson  et al → Wayco Limited Partnership No 1; 1992-01-01 to 1993-03-09; source msha-controller-operator-history
- **operator_operates_mine:** Sequoia Mining Company → No 1; 1993-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Strawser Raymond → No 1; 1993-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Strawser Raymond → Sequoia Mining Company; 1993-03-10 to current/open; source msha-controller-operator-history