# Relationship history for MSHA mine 4406331

Current hierarchy: **Barnette Dennis A → Kodiak Mining Company → #1 Strip**

- 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:** Kodiak Mining Company → #1 Strip; 1986-09-01 to 1987-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Barnette Dennis A → #1 Strip; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barnette Dennis A → Kodiak Mining Company; 1986-09-01 to 1987-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Bolling Gina S → #1 Strip; 1987-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pick & Shovel Inc → #1 Strip; 1987-10-06 to 1989-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Bolling Gina S → Pick & Shovel Inc; 1987-10-06 to 1989-06-27; source msha-controller-operator-history
- **operator_operates_mine:** Kodiak Mining Company → #1 Strip; 1989-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barnette Dennis A → Kodiak Mining Company; 1989-06-28 to current/open; source msha-controller-operator-history