# Relationship history for MSHA mine 4601928

Current hierarchy: **K C Holding Company → Kessler Coals Inc → No 2 And 2a 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Kessler Coals Inc → No 2 And 2a Mine; 1950-01-01 to 1982-05-19; source msha-controller-operator-history
- **controller_controls_mine:** James K  Kessler → No 2 And 2a Mine; 1950-01-01 to 1982-05-19; source msha-controller-operator-history
- **controller_controls_operator:** James K  Kessler → Kessler Coals Inc; 1950-01-01 to 1982-05-19; source msha-controller-operator-history
- **controller_controls_mine:** K C Holding Company → No 2 And 2a Mine; 1982-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kessler Coals Inc → No 2 And 2a Mine; 1982-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** K C Holding Company → Kessler Coals Inc; 1982-05-20 to current/open; source msha-controller-operator-history