# Relationship history for MSHA mine 3402165

Current hierarchy: **Kenneth Blain  Blaylock → Nashoba Stone LLC → BLAND WEST**

- 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 → BLAND WEST; 2014-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chance M Gros et al → BLAND WEST; 2018-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yote Stone → BLAND WEST; 2022-07-18 to 2023-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Chance M Gros et al → Yote Stone; 2022-07-18 to 2023-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth Blaine Blaylock et al → Yote Stone; 2022-07-18 to 2023-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth Blain  Blaylock → BLAND WEST; 2023-04-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nashoba Stone → BLAND WEST; 2023-08-04 to 2024-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth Blain  Blaylock → Nashoba Stone; 2023-08-04 to 2024-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Oklahoma Natural Stone and Hardscapes → BLAND WEST; 2024-08-15 to 2025-07-16; source msha-controller-operator-history
- **controller_controls_operator:** Terry Lee  Nix et al → Oklahoma Natural Stone and Hardscapes; 2024-08-15 to 2025-07-16; source msha-controller-operator-history
- **operator_operates_mine:** Nashoba Stone LLC → BLAND WEST; 2025-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth Blain  Blaylock → Nashoba Stone LLC; 2025-07-17 to current/open; source msha-controller-operator-history