# Relationship history for MSHA mine 4406449

Current hierarchy: **Mc Glothlin Warren H → Pamelia Mining Inc → #1 Auger**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Cheyenne Mining Corp → #1 Auger; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Potter David L → #1 Auger; 1986-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hamilton Judy → #1 Auger; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Beaver Drilling Company → #1 Auger; 1988-03-01 to 1988-10-27; source msha-controller-operator-history
- **controller_controls_operator:** Potter David L → Little Beaver Drilling Company; 1988-03-01 to 1988-10-27; source msha-controller-operator-history
- **operator_operates_mine:** Enterprise Coal Corp → #1 Auger; 1988-10-28 to 1988-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Hamilton Judy → Enterprise Coal Corp; 1988-10-28 to 1988-12-20; source msha-controller-operator-history
- **operator_operates_mine:** Blackfoot Mining Inc → #1 Auger; 1988-12-21 to 1989-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Cheyenne Mining Corp → Blackfoot Mining Inc; 1988-12-21 to 1989-01-22; source msha-controller-operator-history
- **operator_operates_mine:** Pamelia Mining Inc → #1 Auger; 1989-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Glothlin Warren H → #1 Auger; 1989-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Glothlin Warren H → Pamelia Mining Inc; 1989-01-23 to current/open; source msha-controller-operator-history