# Relationship history for MSHA mine 1700462

Current hierarchy: **Timothy H Gott → Doug Gott & Sons Inc → B & H Pit & Mill**

- 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:** Doug Gott & Sons Inc → B & H Pit & Mill; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Douglas A  Gott  et al → B & H Pit & Mill; 1978-03-09 to 2012-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Douglas A  Gott  et al → Doug Gott & Sons Inc; 1978-03-09 to 2012-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Timothy  Gott et al → B & H Pit & Mill; 2012-07-27 to 2024-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Gott et al → Doug Gott & Sons Inc; 2012-07-27 to 2024-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Gott et al → Doug Gott & Sons Inc; 2012-07-27 to 2024-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Peter  Gott et al → Doug Gott & Sons Inc; 2012-07-27 to 2024-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Timothy H Gott → B & H Pit & Mill; 2024-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy H Gott → Doug Gott & Sons Inc; 2024-11-05 to current/open; source msha-controller-operator-history