# Relationship history for MSHA mine 0102412

Current hierarchy: **Stricklin Howard E → Stricklin Coal Company Inc → Herb Mine #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:** Stricklin Coal Company Inc → Herb Mine #1; 1981-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stricklin Howard E → Herb Mine #1; 1981-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stricklin Howard E → Stricklin Coal Company Inc; 1981-11-01 to current/open; source msha-controller-operator-history