# Relationship history for MSHA mine 1516751

Current hierarchy: **James A  Dean → Cubage Coal Inc → 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:** Big Z Coal Inc → No 1; 1989-10-01 to 1990-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Marcum Zora → No 1; 1989-10-01 to 1991-09-03; source msha-controller-operator-history
- **controller_controls_operator:** Marcum Zora → Big Z Coal Inc; 1989-10-01 to 1990-08-30; source msha-controller-operator-history
- **operator_operates_mine:** C R Coal Company → No 1; 1990-08-31 to 1993-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Fuson Lenvil & Wendill Et Al → No 1; 1990-08-31 to 1993-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Fuson Lenvil & Wendill Et Al → C R Coal Company; 1990-08-31 to 1993-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Cubage Coal Inc → No 1; 1993-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James A  Dean et al → No 1; 1993-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Dean et al → Cubage Coal Inc; 1993-09-01 to current/open; source msha-controller-operator-history