# Relationship history for MSHA mine 1517782

Current hierarchy: **Timothy L  Fugate; Brack  Baker → Hannco Energy Inc → #9 Surface**

- 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:** Brack  Baker et al → #9 Surface; 1991-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & S Mining Corp → #9 Surface; 1996-05-01 to 1997-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Graves → #9 Surface; 1996-05-01 to 1997-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Graves → M & S Mining Corp; 1996-05-01 to 1997-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Delta Machinery Company Inc → #9 Surface; 1997-01-10 to 2000-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Mary Ann  Kent → #9 Surface; 1997-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary Ann  Kent → Delta Machinery Company Inc; 1997-01-10 to 2000-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Hannco Energy Inc → #9 Surface; 2000-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brack  Baker et al → Hannco Energy Inc; 2000-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy L  Fugate et al → Hannco Energy Inc; 2000-07-18 to current/open; source msha-controller-operator-history