# Relationship history for MSHA mine 0801415

Current hierarchy: **Christopher S  Lyons; Scott M  Lyons → Tomahawk Construction LLC → Delta Mine**

- 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:** Delta Materials LLC → Delta Mine; 2017-05-08 to 2020-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Delta Aggregate LLC → Delta Mine; 2017-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Delta Aggregate LLC → Delta Materials LLC; 2017-05-08 to 2020-06-16; source msha-controller-operator-history
- **operator_operates_mine:** Delta Aggregate, LLC → Delta Mine; 2020-06-17 to 2025-02-04; source msha-controller-operator-history
- **controller_controls_mine:** MSFL Leasing, LLC → Delta Mine; 2020-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MSFL Leasing, LLC → Delta Aggregate, LLC; 2020-06-17 to 2025-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Christopher S  Lyons et al → Delta Mine; 2021-07-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tomahawk Construction LLC → Delta Mine; 2025-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher S  Lyons et al → Tomahawk Construction LLC; 2025-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott M  Lyons et al → Tomahawk Construction LLC; 2025-02-05 to current/open; source msha-controller-operator-history