# Relationship history for MSHA mine 4105351

Current hierarchy: **Howling Dog Management, LLC; Bryan  Wolff; Elizabeth  Wolff; Clinton C W → Wolff Construction, LP → Amity Pit**

- 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:** Wolff Construction, LP → Amity Pit; 2018-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bryan  Wolff et al → Amity Pit; 2018-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryan  Wolff et al → Wolff Construction, LP; 2018-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howling Dog Management, LLC → Wolff Construction, LP; 2018-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clinton C Wolff et al → Wolff Construction, LP; 2018-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elizabeth  Wolff et al → Wolff Construction, LP; 2018-03-27 to current/open; source msha-controller-operator-history