# Relationship history for MSHA mine 2401702

Current hierarchy: **Reykdal Merv & John St John → Lil Diamond Mining → Lil Diamond**

- 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:** Diamond City Mining Company → Lil Diamond; 1983-01-01 to 1989-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Diamond City Mining Company → Lil Diamond; 1983-01-01 to 1989-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Diamond City Mining Company → Diamond City Mining Company; 1983-01-01 to 1989-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Lil Diamond Mining → Lil Diamond; 1989-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reykdal Merv & John St John → Lil Diamond; 1989-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reykdal Merv & John St John → Lil Diamond Mining; 1989-07-07 to current/open; source msha-controller-operator-history