# Relationship history for MSHA mine 1517482

Current hierarchy: **Stanley R  Ditty → B & D Mining Llc → B & D #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:** Great Western Resources Inc → B & D #1; 1987-02-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Spike Construction Company Inc → B & D #1; 1993-12-01 to 1994-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Shelby L  Wilson et al → B & D #1; 1993-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shelby L  Wilson et al → Spike Construction Company Inc; 1993-12-01 to 1994-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Harlan Fuel Company → B & D #1; 1994-03-15 to 1995-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Great Western Resources Inc → Harlan Fuel Company; 1994-03-15 to 1995-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Harlan Fuel Company → B & D #1; 1995-08-15 to 2001-07-29; source msha-controller-operator-history
- **controller_controls_mine:** George E  Barker → B & D #1; 1995-08-15 to 2001-07-29; source msha-controller-operator-history
- **controller_controls_operator:** George E  Barker → Harlan Fuel Company; 1995-08-15 to 2001-07-29; source msha-controller-operator-history
- **operator_operates_mine:** B & D Mining Llc → B & D #1; 2001-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stanley R  Ditty → B & D #1; 2001-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley R  Ditty → B & D Mining Llc; 2001-07-30 to current/open; source msha-controller-operator-history