# Relationship history for MSHA mine 3602014

Current hierarchy: **Rick E  Bender; Richard  Boyer → Superior Coal Preparation Co-Op LLC → Superior Coal Preparation Co-Op LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Superior Preparation Company Inc → Superior Coal Preparation Co-Op LLC; 1977-05-01 to 1984-07-15; source msha-controller-operator-history
- **controller_controls_mine:** Roy E  Blyler → Superior Coal Preparation Co-Op LLC; 1977-05-01 to 1984-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Roy E  Blyler → Superior Preparation Company Inc; 1977-05-01 to 1984-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Superior Preparation Company Inc → Superior Coal Preparation Co-Op LLC; 1984-07-16 to 1993-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Sterman  Masser → Superior Coal Preparation Co-Op LLC; 1984-07-16 to 1993-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Sterman  Masser → Superior Preparation Company Inc; 1984-07-16 to 1993-12-29; source msha-controller-operator-history
- **operator_operates_mine:** Superior Preparation → Superior Coal Preparation Co-Op LLC; 1993-12-30 to 2001-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Ronald  Lickman → Superior Coal Preparation Co-Op LLC; 1993-12-30 to 2001-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Ronald  Lickman → Superior Preparation; 1993-12-30 to 2001-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Superior Coal Preparation Co-Op LLC → Superior Coal Preparation Co-Op LLC; 2001-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lickman Quinn → Superior Coal Preparation Co-Op LLC; 2001-10-01 to 2004-01-30; source msha-controller-operator-history
- **controller_controls_operator:** Lickman Quinn → Superior Coal Preparation Co-Op LLC; 2001-10-01 to 2004-01-30; source msha-controller-operator-history
- **controller_controls_mine:** Rick E  Bender et al → Superior Coal Preparation Co-Op LLC; 2004-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick E  Bender et al → Superior Coal Preparation Co-Op LLC; 2004-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Boyer et al → Superior Coal Preparation Co-Op LLC; 2004-01-31 to current/open; source msha-controller-operator-history