# Relationship history for MSHA mine 4003521

Current hierarchy: **Panola Holdings 1, Inc; FUPO, LLC; Joshua  Sorg; Lee  Ellis → Wolf Industries, LLC → Graysville Quarry**

- 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:** Wolf Industries, LLC → Graysville Quarry; 2019-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Panola Holdings 1, Inc et al → Graysville Quarry; 2019-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Panola Holdings 1, Inc et al → Wolf Industries, LLC; 2019-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** FUPO, LLC et al → Wolf Industries, LLC; 2019-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua  Sorg et al → Wolf Industries, LLC; 2019-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lee  Ellis et al → Wolf Industries, LLC; 2019-06-25 to current/open; source msha-controller-operator-history