# Relationship history for MSHA mine 4406021

Current hierarchy: **El Paso Energy Corp → Virginia Iron Coal & Coke Company → Flemingtown Reclamation**

- 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

- **controller_controls_mine:** Riner Charles → Flemingtown Reclamation; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → Flemingtown Reclamation; 1979-06-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Marco Inc → Flemingtown Reclamation; 1983-09-01 to 1990-03-05; source msha-controller-operator-history
- **controller_controls_operator:** Riner Charles → Marco Inc; 1983-09-01 to 1990-03-05; source msha-controller-operator-history
- **controller_controls_mine:** Turner Fran E Et Al → Flemingtown Reclamation; 1985-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ka-Ron Enterprises Inc → Flemingtown Reclamation; 1990-03-06 to 1991-05-15; source msha-controller-operator-history
- **controller_controls_operator:** Turner Fran E Et Al → Ka-Ron Enterprises Inc; 1990-03-06 to 1991-05-15; source msha-controller-operator-history
- **operator_operates_mine:** Virginia Iron Coal & Coke Company → Flemingtown Reclamation; 1991-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Virginia Iron Coal & Coke Company; 1991-05-16 to current/open; source msha-controller-operator-history