# Relationship history for MSHA mine 1601315

Current hierarchy: **Scott M  Smith → Allgood Inc → TERRAL LEASE**

- 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:** T Eric  Johnson → TERRAL LEASE; 1995-08-01 to 1997-09-02; source msha-controller-operator-history
- **operator_operates_mine:** Plainview Products Inc → TERRAL LEASE; 1997-04-01 to 1997-09-02; source msha-controller-operator-history
- **controller_controls_operator:** T Eric  Johnson → Plainview Products Inc; 1997-04-01 to 1997-09-02; source msha-controller-operator-history
- **operator_operates_mine:** Allgood Inc → TERRAL LEASE; 1997-09-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott M  Smith → TERRAL LEASE; 1997-09-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott M  Smith → Allgood Inc; 1997-09-03 to current/open; source msha-controller-operator-history