# Relationship history for MSHA mine 4201199

Current hierarchy: **Fulton Caesar & Charles A Denton → Shakespear Coal Corp → Shakespeare 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Discovery 21 Enterprises Inc → Shakespeare Mine; 1975-07-16 to 1976-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Tatum James → Shakespeare Mine; 1975-07-16 to 1976-10-06; source msha-controller-operator-history
- **controller_controls_operator:** Tatum James → Discovery 21 Enterprises Inc; 1975-07-16 to 1976-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Shakespear Coal Corp → Shakespeare Mine; 1976-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fulton Caesar & Charles A Denton → Shakespeare Mine; 1976-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fulton Caesar & Charles A Denton → Shakespear Coal Corp; 1976-10-07 to current/open; source msha-controller-operator-history