# Relationship history for MSHA mine 4406812

Current hierarchy: **Metinvest B V → Banner Blue Coal Company → Smith Br**

- 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:** Sam  Blankenship → Smith Br; 1990-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary A  Horn → Smith Br; 1991-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary A  Horn → Smith Br; 1991-07-22 to 2005-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Fred D  Matney  et al → Smith Br; 1991-08-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buchanan Production Company → Smith Br; 1995-10-01 to 2001-01-28; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Horn → Buchanan Production Company; 1995-10-01 to 2001-01-28; source msha-controller-operator-history
- **operator_operates_mine:** S & B Coal Corp → Smith Br; 2001-01-29 to 2002-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Sam  Blankenship → Smith Br; 2001-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Blankenship → S & B Coal Corp; 2001-01-29 to 2002-09-17; source msha-controller-operator-history
- **operator_operates_mine:** Nufac Mining, Inc. → Smith Br; 2002-09-18 to 2003-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Fred D  Matney  et al → Nufac Mining, Inc.; 2002-09-18 to 2003-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Rick A  Matney  et al → Nufac Mining, Inc.; 2002-09-18 to 2003-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Hank K  Matney  et al → Nufac Mining, Inc.; 2002-09-18 to 2003-09-18; source msha-controller-operator-history
- **controller_controls_mine:** Jay  Wallace → Smith Br; 2003-03-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S & B Coal Corporation → Smith Br; 2003-09-19 to 2003-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Blankenship → S & B Coal Corporation; 2003-09-19 to 2003-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Black Canyon Mining Company → Smith Br; 2003-11-03 to 2004-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Blankenship → Black Canyon Mining Company; 2003-11-03 to 2004-10-17; source msha-controller-operator-history
- **operator_operates_mine:** Cat Bird Mining, Inc. → Smith Br; 2004-10-18 to 2006-10-18; source msha-controller-operator-history
- **controller_controls_operator:** Jay  Wallace → Cat Bird Mining, Inc.; 2004-10-18 to 2006-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Sam  Blankenship → Smith Br; 2005-10-20 to 2006-01-22; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Smith Br; 2006-01-23 to 2009-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Banner Blue Coal Company → Smith Br; 2006-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Banner Blue Coal Company; 2006-10-19 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Blankenship → Banner Blue Coal Company; 2006-10-19 to 2006-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Horn → Banner Blue Coal Company; 2006-10-19 to 2005-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → Smith Br; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Banner Blue Coal Company; 2009-04-30 to current/open; source msha-controller-operator-history