# Relationship history for MSHA mine 3401075

Current hierarchy: **Walters Mannin L Jr → Gocat Inc → Gocat #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

- **controller_controls_mine:** Wells Gary L & Keith E → Gocat #1; 1977-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wells Coal Company → Gocat #1; 1977-11-01 to 1978-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Wells Gary L & Keith E → Wells Coal Company; 1977-11-01 to 1978-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Walters Mannin L Jr → Gocat #1; 1978-03-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gocat Inc → Gocat #1; 1978-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walters Mannin L Jr → Gocat Inc; 1978-07-12 to current/open; source msha-controller-operator-history