# Relationship history for MSHA mine 3401928

Current hierarchy: **Scott  Laine; Terry  Weaver → L & W Stone Corporation → Buffalo Mountain**

- 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:** Terry  Weaver Et Al → Buffalo Mountain; 1997-04-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L & W Stone Corporation → Buffalo Mountain; 2004-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Weaver Et Al → L & W Stone Corporation; 2004-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Laine Et Al → L & W Stone Corporation; 2004-02-29 to current/open; source msha-controller-operator-history