# Relationship history for MSHA mine 4605128

Current hierarchy: **Click Cecil & Larry M Leffew → Click & Leffew Coal Company Inc → Sewell 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Double A Mining Inc → Sewell Mine #1; 1976-04-01 to 1979-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Double A Mining Inc → Sewell Mine #1; 1976-04-01 to 1979-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Double A Mining Inc → Double A Mining Inc; 1976-04-01 to 1979-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Click Cecil & Larry M Leffew → Sewell Mine #1; 1977-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adkins William → Sewell Mine #1; 1979-05-09 to 1988-03-19; source msha-controller-operator-history
- **operator_operates_mine:** D A D Coal Company Inc → Sewell Mine #1; 1979-07-06 to 1988-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Adkins William → D A D Coal Company Inc; 1979-07-06 to 1988-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Little Creek Mining Inc → Sewell Mine #1; 1988-03-20 to 1989-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Steele Kathy & Karen Click → Sewell Mine #1; 1988-03-20 to 1989-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Steele Kathy & Karen Click → Little Creek Mining Inc; 1988-03-20 to 1989-02-13; source msha-controller-operator-history
- **operator_operates_mine:** Click & Leffew Coal Company Inc → Sewell Mine #1; 1989-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Click Cecil & Larry M Leffew → Click & Leffew Coal Company Inc; 1989-02-14 to current/open; source msha-controller-operator-history