# Relationship history for MSHA mine 4605370

Current hierarchy: **Click Cecil & Larry M Leffew → Click & Leffew Coal Company Inc → Sewell No 2 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:** Mc Kee Kenneth Et Al → Sewell No 2 Mine; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & J Coal Company Inc → Sewell No 2 Mine; 1976-12-01 to 1979-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kee Kenneth Et Al → J & J Coal Company Inc; 1976-12-01 to 1979-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Click Cecil & Larry M Leffew → Sewell No 2 Mine; 1977-01-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & J Coal Company Inc → Sewell No 2 Mine; 1979-01-10 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Robert → Sewell No 2 Mine; 1979-01-10 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Robert → J & J Coal Company Inc; 1979-01-10 to 1979-04-30; source msha-controller-operator-history
- **operator_operates_mine:** J & J Coal Company Inc → Sewell No 2 Mine; 1979-05-01 to 1988-06-10; source msha-controller-operator-history
- **controller_controls_mine:** O'Neal Winston R → Sewell No 2 Mine; 1979-05-01 to 1988-06-10; source msha-controller-operator-history
- **controller_controls_operator:** O'Neal Winston R → J & J Coal Company Inc; 1979-05-01 to 1988-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Click & Leffew Coal Company Inc → Sewell No 2 Mine; 1988-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Click Cecil & Larry M Leffew → Click & Leffew Coal Company Inc; 1988-06-11 to current/open; source msha-controller-operator-history