# Relationship history for MSHA mine 1517110

Current hierarchy: **American Resources Corporation → KNOTT COUNTY COAL LLC → Calvery Mine**

- 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:** Goebel  Zeller et al → Calvery Mine; 1974-09-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Faith Coal Sales Inc → Calvery Mine; 1991-08-01 to 1998-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Goebel  Zeller et al → Faith Coal Sales Inc; 1991-08-01 to 1998-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Bill R  Wallace et al → Faith Coal Sales Inc; 1991-08-01 to 1998-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Zeigler Coal Holding Company → Calvery Mine; 1992-11-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hansel D  Fleming → Calvery Mine; 1993-05-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Knott County Mining Company → Calvery Mine; 1998-02-12 to 1998-12-13; source msha-controller-operator-history
- **controller_controls_operator:** Zeigler Coal Holding Company → Knott County Mining Company; 1998-02-12 to 1998-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Calvery Mine; 1998-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Allen G  Stump et al → Calvery Mine; 1998-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fleming Enterprises Inc → Calvery Mine; 1998-12-14 to 2000-12-13; source msha-controller-operator-history
- **controller_controls_operator:** Hansel D  Fleming → Fleming Enterprises Inc; 1998-12-14 to 2000-12-13; source msha-controller-operator-history
- **operator_operates_mine:** Gentec Processing Inc → Calvery Mine; 2000-12-14 to 2002-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Allen G  Stump et al → Gentec Processing Inc; 2000-12-14 to 2002-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Suzie  Fought → Calvery Mine; 2001-09-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Knott County  Mining Company → Calvery Mine; 2002-04-15 to 2002-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Knott County  Mining Company; 2002-04-15 to 2002-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Border Mining Inc. → Calvery Mine; 2002-06-10 to 2003-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Suzie  Fought → Border Mining Inc.; 2002-06-10 to 2003-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Knott County Mining Company → Calvery Mine; 2003-06-11 to 2004-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Knott County Mining Company; 2003-06-11 to 2004-09-30; source msha-controller-operator-history
- **operator_operates_mine:** KNOTT COUNTY COAL LLC → Calvery Mine; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** International Coal Group Inc (ICG) → Calvery Mine; 2004-10-01 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → KNOTT COUNTY COAL LLC; 2004-10-01 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Calvery Mine; 2011-06-15 to 2016-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → KNOTT COUNTY COAL LLC; 2011-06-15 to 2016-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Quest Energy Corporation → Calvery Mine; 2016-04-12 to 2017-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Quest Energy Corporation → KNOTT COUNTY COAL LLC; 2016-04-12 to 2017-01-04; source msha-controller-operator-history
- **controller_controls_mine:** American Resources Corporation → Calvery Mine; 2017-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Resources Corporation → KNOTT COUNTY COAL LLC; 2017-01-05 to current/open; source msha-controller-operator-history