# Relationship history for MSHA mine 4406842

Current hierarchy: **Mark G  Altizer → Highwall Mining Company Of Va Inc → Auger #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:** Raymond D  Hall  et al → Auger #1; 1995-12-01 to 1998-09-13; source msha-controller-operator-history
- **operator_operates_mine:** Rock Solid Contracting Inc → Auger #1; 1996-06-01 to 1996-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Collins Gary M → Auger #1; 1996-06-01 to 1996-11-11; source msha-controller-operator-history
- **controller_controls_operator:** Collins Gary M → Rock Solid Contracting Inc; 1996-06-01 to 1996-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Hall Franklin D → Auger #1; 1996-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hall Coal Company Inc → Auger #1; 1996-11-12 to 1997-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Raymond D  Hall  et al → Hall Coal Company Inc; 1996-11-12 to 1997-07-07; source msha-controller-operator-history
- **operator_operates_mine:** H & H Coal Company Inc → Auger #1; 1997-07-08 to 1997-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Hall Franklin D → H & H Coal Company Inc; 1997-07-08 to 1997-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Tycoby Fuels Corp → Auger #1; 1997-09-01 to 1998-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Dirk  Johnson → Auger #1; 1997-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dirk  Johnson → Tycoby Fuels Corp; 1997-09-01 to 1998-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Highwall Mining Company Of Va Inc → Auger #1; 1998-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark G  Altizer → Auger #1; 1998-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark G  Altizer → Highwall Mining Company Of Va Inc; 1998-06-30 to current/open; source msha-controller-operator-history