# Relationship history for MSHA mine 3402243

Current hierarchy: **John  Alstatt; Cliff  Alstatt → Eastern Oklahoma Stone LLC → Tamaha 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

- **controller_controls_mine:** Terry Lee  Nix et al → Tamaha Pit; 2014-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Alstatt et al → Tamaha Pit; 2016-10-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Oklahoma Natural Stone → Tamaha Pit; 2024-05-21 to 2026-02-05; source msha-controller-operator-history
- **controller_controls_operator:** Terry Lee  Nix et al → Oklahoma Natural Stone; 2024-05-21 to 2026-02-05; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Oklahoma Stone LLC → Tamaha Pit; 2026-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Alstatt et al → Eastern Oklahoma Stone LLC; 2026-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cliff  Alstatt et al → Eastern Oklahoma Stone LLC; 2026-02-06 to current/open; source msha-controller-operator-history