# Relationship history for MSHA mine 1517481

Current hierarchy: **Calvin R  Tackett → Hardshell Tipples Inc. → Hardshell Tipples Mine #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

- **operator_operates_mine:** Coyote Company → Hardshell Tipples Mine #1; 1993-12-01 to 2001-08-05; source msha-controller-operator-history
- **controller_controls_mine:** Salyers Roger & Jerry Farley → Hardshell Tipples Mine #1; 1993-12-01 to 2001-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Salyers Roger & Jerry Farley → Coyote Company; 1993-12-01 to 2001-08-05; source msha-controller-operator-history
- **controller_controls_mine:** Michael K  Cook et al → Hardshell Tipples Mine #1; 2000-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James A  Hubbard → Hardshell Tipples Mine #1; 2001-01-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nu Enterprise Corp → Hardshell Tipples Mine #1; 2001-08-06 to 2002-02-18; source msha-controller-operator-history
- **controller_controls_operator:** James A  Hubbard → Nu Enterprise Corp; 2001-08-06 to 2002-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Cook and Sons Mining, Inc. → Hardshell Tipples Mine #1; 2002-02-19 to 2002-07-08; source msha-controller-operator-history
- **controller_controls_operator:** Michael K  Cook et al → Cook and Sons Mining, Inc.; 2002-02-19 to 2002-07-08; source msha-controller-operator-history
- **controller_controls_operator:** Randy A  Cook et al → Cook and Sons Mining, Inc.; 2002-02-19 to 2002-07-08; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Mountain Processing, Inc. → Hardshell Tipples Mine #1; 2002-07-09 to 2003-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Ronnie L  Skeens → Hardshell Tipples Mine #1; 2002-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie L  Skeens → Leslie Mountain Processing, Inc.; 2002-07-09 to 2003-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Cook and Sons Mining, Inc. → Hardshell Tipples Mine #1; 2003-04-04 to 2004-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Randy A  Cook et al → Cook and Sons Mining, Inc.; 2003-04-04 to 2004-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Michael K  Cook et al → Cook and Sons Mining, Inc.; 2003-04-04 to 2004-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Shubert et al → Hardshell Tipples Mine #1; 2004-01-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tri-Energy, Inc. → Hardshell Tipples Mine #1; 2004-02-05 to 2005-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Shubert et al → Tri-Energy, Inc.; 2004-02-05 to 2005-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Jennings et al → Tri-Energy, Inc.; 2004-02-05 to 2005-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Baily  Allred et al → Hardshell Tipples Mine #1; 2005-05-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hardshell Tipples Inc → Hardshell Tipples Mine #1; 2005-08-02 to 2005-09-18; source msha-controller-operator-history
- **controller_controls_mine:** Calvin R  Tackett → Hardshell Tipples Mine #1; 2005-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calvin R  Tackett → Hardshell Tipples Inc; 2005-08-02 to 2005-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Gateway Energy Inc → Hardshell Tipples Mine #1; 2005-09-19 to 2007-09-19; source msha-controller-operator-history
- **controller_controls_operator:** Baily  Allred et al → Gateway Energy Inc; 2005-09-19 to 2007-09-19; source msha-controller-operator-history
- **operator_operates_mine:** Hardshell Tipples Inc. → Hardshell Tipples Mine #1; 2007-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calvin R  Tackett → Hardshell Tipples Inc.; 2007-09-20 to current/open; source msha-controller-operator-history