# Relationship history for MSHA mine 1401625

Current hierarchy: **Vincent J  Lardner III → New Mexico Travertine Incorporated → Cottonwood**

- 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:** Timothy J  Lardner → Cottonwood; 2000-02-01 to 2011-01-23; source msha-controller-operator-history
- **operator_operates_mine:** New Mexico Travertine Incorporated → Cottonwood; 2003-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy J  Lardner → New Mexico Travertine Incorporated; 2003-04-14 to 2011-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Vincent J  Lardner III et al → Cottonwood; 2011-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vincent J  Lardner III et al → New Mexico Travertine Incorporated; 2011-01-24 to current/open; source msha-controller-operator-history