# Relationship history for MSHA mine 1519900

Current hierarchy: **Robin  Lewis → Old House Mining. LLC → Old House Mining #1**

- 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:** Old House Mining. LLC → Old House Mining #1; 2021-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leroy  Lewis etal → Old House Mining #1; 2021-08-12 to 2024-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Leroy  Lewis etal → Old House Mining. LLC; 2021-08-12 to 2024-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Robin  Lewis etal → Old House Mining. LLC; 2021-08-12 to 2024-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Robin  Lewis → Old House Mining #1; 2024-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robin  Lewis → Old House Mining. LLC; 2024-02-12 to current/open; source msha-controller-operator-history