# Relationship history for MSHA mine 4607369

Current hierarchy: **James  Taylor; Coy  Taylor → Commonwealth Resources Inc → Mine 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:** Virginia Carbon Inc → Mine No 1; 1987-08-01 to 1990-02-21; source msha-controller-operator-history
- **controller_controls_mine:** David  Clevinger et al → Mine No 1; 1987-08-01 to 1990-02-21; source msha-controller-operator-history
- **controller_controls_operator:** David  Clevinger et al → Virginia Carbon Inc; 1987-08-01 to 1990-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Commonwealth Resources Inc → Mine No 1; 1990-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Coy  Taylor et al → Mine No 1; 1990-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coy  Taylor et al → Commonwealth Resources Inc; 1990-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Taylor et al → Commonwealth Resources Inc; 1990-02-22 to current/open; source msha-controller-operator-history