# Relationship history for MSHA mine 0103585

Current hierarchy: **Michael R. Ballard Irrevocable Trust 2021; Patsy H. Ballard Irrevocable → Big Crater LLC → Big Crater LLC**

- 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:** Big Crater LLC → Big Crater LLC; 2024-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patsy H. Ballard Irrevocable Trust 2022 et al → Big Crater LLC; 2024-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patsy H. Ballard Irrevocable Trust 2022 et al → Big Crater LLC; 2024-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael R. Ballard Irrevocable Trust 2021 et al → Big Crater LLC; 2024-01-30 to current/open; source msha-controller-operator-history