# Relationship history for MSHA mine 4603356

Current hierarchy: **CONSOL Energy Inc → Terry Eagle Coal Company Llc → Christopher No 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Christopher Coal Sales Corp → Christopher No 1; 1950-01-01 to 1980-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Seelinger et al → Christopher No 1; 1950-01-01 to 1980-10-06; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Seelinger et al → Christopher Coal Sales Corp; 1950-01-01 to 1980-10-06; source msha-controller-operator-history
- **controller_controls_mine:** W R Grace Company et al → Christopher No 1; 1980-10-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company-Limited Partnership → Christopher No 1; 1980-10-07 to 1985-09-26; source msha-controller-operator-history
- **controller_controls_operator:** W R Grace Company et al → Terry Eagle Coal Company-Limited Partnership; 1980-10-07 to 1985-09-26; source msha-controller-operator-history
- **controller_controls_operator:** M A Hanna Company et al → Terry Eagle Coal Company-Limited Partnership; 1980-10-07 to 1985-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company → Christopher No 1; 1985-09-27 to 1988-04-08; source msha-controller-operator-history
- **controller_controls_mine:** M A Hanna Company → Christopher No 1; 1985-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M A Hanna Company → Terry Eagle Coal Company; 1985-09-27 to 1988-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Amvest Corporation → Christopher No 1; 1988-04-01 to 2007-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company Llc → Christopher No 1; 1988-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amvest Corporation → Terry Eagle Coal Company Llc; 1988-04-09 to 2007-07-31; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → Christopher No 1; 2007-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Terry Eagle Coal Company Llc; 2007-08-01 to current/open; source msha-controller-operator-history