# Relationship history for MSHA mine 4601296

Current hierarchy: **Goodwin Barry K → Mountain Minerals Inc → #4 Mine**

- 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:** Milburn Colliery Company → #4 Mine; 1950-01-01 to 1989-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Christian C Lynch Jr → #4 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christian C Lynch Jr → Milburn Colliery Company; 1950-01-01 to 1989-05-24; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Minerals Inc → #4 Mine; 1989-05-25 to 1990-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Brooks Michael G → #4 Mine; 1989-05-25 to 1990-03-15; source msha-controller-operator-history
- **controller_controls_operator:** Brooks Michael G → Mountain Minerals Inc; 1989-05-25 to 1990-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Men Mining Inc → #4 Mine; 1990-03-16 to 1990-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Mc Graw Patrick → #4 Mine; 1990-03-16 to 1990-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Mc Graw Patrick → Mountain Men Mining Inc; 1990-03-16 to 1990-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Goodwin Barry K → #4 Mine; 1990-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Minerals Inc → #4 Mine; 1990-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Goodwin Barry K → Mountain Minerals Inc; 1990-08-16 to current/open; source msha-controller-operator-history