# Relationship history for MSHA mine 1516697

Current hierarchy: **Goddess Coal Corp LLC → New Horizons Coal Inc → Oxford #6**

- 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:** Robbins Gus D → Oxford #6; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Great Western Resources Inc → Oxford #6; 1987-02-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Great Western Coal Inc → Oxford #6; 1989-08-01 to 1990-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Great Western Resources Inc → Great Western Coal Inc; 1989-08-01 to 1990-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Harlan Wallins Coal Company Inc → Oxford #6; 1990-02-12 to 1991-11-13; source msha-controller-operator-history
- **controller_controls_operator:** Robbins Gus D → Harlan Wallins Coal Company Inc; 1990-02-12 to 1991-11-13; source msha-controller-operator-history
- **operator_operates_mine:** New Horizons Coal Inc → Oxford #6; 1991-11-14 to 1995-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Great Western Resources Inc → New Horizons Coal Inc; 1991-11-14 to 1995-08-14; source msha-controller-operator-history
- **operator_operates_mine:** New Horizons Coal Inc → Oxford #6; 1995-08-15 to 1996-06-15; source msha-controller-operator-history
- **controller_controls_mine:** George E  Barker → Oxford #6; 1995-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George E  Barker → New Horizons Coal Inc; 1995-08-15 to 1996-06-15; source msha-controller-operator-history
- **controller_controls_mine:** Goddess Coal Corp LLC → Oxford #6; 1996-06-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** New Horizons Coal Inc → Oxford #6; 1996-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Goddess Coal Corp LLC → New Horizons Coal Inc; 1996-06-16 to current/open; source msha-controller-operator-history