# Relationship history for MSHA mine 1516590

Current hierarchy: **Adkins Donald → Amanda & Kale Coal Company Inc → #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

- **controller_controls_mine:** Collins Richard A → #1; 1986-07-21 to 1989-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Morning Sun Coal Company Inc → #1; 1989-03-01 to 1989-09-17; source msha-controller-operator-history
- **controller_controls_operator:** Collins Richard A → Morning Sun Coal Company Inc; 1989-03-01 to 1989-09-17; source msha-controller-operator-history
- **operator_operates_mine:** Amanda & Kale Coal Company Inc → #1; 1989-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Donald → #1; 1989-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Donald → Amanda & Kale Coal Company Inc; 1989-09-18 to current/open; source msha-controller-operator-history