# Relationship history for MSHA mine 0301736

Current hierarchy: **Mississippi Minerals Inc → Sebastian Management LLC → Sebastian 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:** Edward E  Smock → Sebastian Mine; 1989-03-27 to 1994-09-22; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Harkins et al → Sebastian Mine; 1992-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mid-America Mining & Development Inc → Sebastian Mine; 1993-01-01 to 1993-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Harkins et al → Mid-America Mining & Development Inc; 1993-01-01 to 1993-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Wiley et al → Mid-America Mining & Development Inc; 1993-01-01 to 1993-09-29; source msha-controller-operator-history
- **operator_operates_mine:** Gemini Mining Corp → Sebastian Mine; 1993-09-30 to 1994-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Edward E  Smock → Gemini Mining Corp; 1993-09-30 to 1994-09-22; source msha-controller-operator-history
- **operator_operates_mine:** Mid-America Mining & Development Inc → Sebastian Mine; 1994-09-23 to 2000-12-21; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Wiley et al → Mid-America Mining & Development Inc; 1994-09-23 to 2000-12-21; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Harkins et al → Mid-America Mining & Development Inc; 1994-09-23 to 2000-12-21; source msha-controller-operator-history
- **operator_operates_mine:** Hartshorne Carbon Company → Sebastian Mine; 2000-12-22 to 2006-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Ohio Holdings Inc → Sebastian Mine; 2000-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ohio Holdings Inc → Hartshorne Carbon Company; 2000-12-22 to 2006-04-02; source msha-controller-operator-history
- **controller_controls_mine:** CraKol Energy LLC → Sebastian Mine; 2003-08-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Heidtman Mining LLC → Sebastian Mine; 2006-04-03 to 2010-05-02; source msha-controller-operator-history
- **controller_controls_mine:** R Alex  Johnson et al → Sebastian Mine; 2006-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R Alex  Johnson et al → Heidtman Mining LLC; 2006-04-03 to 2010-05-02; source msha-controller-operator-history
- **operator_operates_mine:** South Central Coal Co. Inc. → Sebastian Mine; 2010-05-03 to 2013-03-03; source msha-controller-operator-history
- **controller_controls_operator:** CraKol Energy LLC → South Central Coal Co. Inc.; 2010-05-03 to 2013-03-03; source msha-controller-operator-history
- **operator_operates_mine:** Sebastian Management LLC → Sebastian Mine; 2013-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mississippi Minerals Inc → Sebastian Mine; 2013-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mississippi Minerals Inc → Sebastian Management LLC; 2013-03-04 to current/open; source msha-controller-operator-history