# Relationship history for MSHA mine 1518481

Current hierarchy: **Spark Capital LLC; Greg  Boggs; Michael  Zienkovicz; Imran  Firoz → Tero-Therm Inc → Sandlick No. 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:** David  Hogg et al → Sandlick No. 1; 1986-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roy  Parsons → Sandlick No. 1; 1994-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kipar, Inc. → Sandlick No. 1; 2001-11-27 to 2004-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Roy  Parsons → Kipar, Inc.; 2001-11-27 to 2004-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Cindy A  Stewart → Sandlick No. 1; 2003-12-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kannan Mining Co., Inc. → Sandlick No. 1; 2004-01-20 to 2004-02-26; source msha-controller-operator-history
- **controller_controls_operator:** David  Hogg et al → Kannan Mining Co., Inc.; 2004-01-20 to 2004-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Kipar Inc → Sandlick No. 1; 2004-02-27 to 2004-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Roy  Parsons → Kipar Inc; 2004-02-27 to 2004-07-05; source msha-controller-operator-history
- **operator_operates_mine:** Jane Coal Inc → Sandlick No. 1; 2004-07-06 to 2006-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Cindy A  Stewart → Jane Coal Inc; 2004-07-06 to 2006-10-19; source msha-controller-operator-history
- **controller_controls_mine:** James M  Davidson Jr → Sandlick No. 1; 2006-06-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Davidson Mining & Excavation LLC → Sandlick No. 1; 2006-10-20 to 2011-08-08; source msha-controller-operator-history
- **controller_controls_operator:** James M  Davidson Jr → Davidson Mining & Excavation LLC; 2006-10-20 to 2011-08-08; source msha-controller-operator-history
- **controller_controls_mine:** Erik  Addington et al → Sandlick No. 1; 2008-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James C  Halcomb → Sandlick No. 1; 2010-06-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Red Bush Coal, LLC → Sandlick No. 1; 2011-08-09 to 2012-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Erik  Addington et al → Red Bush Coal, LLC; 2011-08-09 to 2012-09-25; source msha-controller-operator-history
- **controller_controls_operator:** A Bruce  Addington et al → Red Bush Coal, LLC; 2011-08-09 to 2012-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Halco Services, LLC → Sandlick No. 1; 2012-09-26 to 2017-12-13; source msha-controller-operator-history
- **controller_controls_operator:** James C  Halcomb → Halco Services, LLC; 2012-09-26 to 2017-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Shannon  Burnett et al → Sandlick No. 1; 2014-09-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** SF Contracting LLC → Sandlick No. 1; 2017-12-14 to 2019-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Shannon  Burnett et al → SF Contracting LLC; 2017-12-14 to 2019-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Charlie  Slykhuis et al → SF Contracting LLC; 2017-12-14 to 2019-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Tero-Therm Inc → Sandlick No. 1; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Imran  Firoz et al → Sandlick No. 1; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imran  Firoz et al → Tero-Therm Inc; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Boggs et al → Tero-Therm Inc; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Spark Capital LLC et al → Tero-Therm Inc; 2019-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Zienkovicz et al → Tero-Therm Inc; 2019-04-25 to current/open; source msha-controller-operator-history