# Relationship history for MSHA mine 3606360

Current hierarchy: **Balena Joseph → Titan Coal & Coke Company Inc → Shamon I**

- 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:** Grigas & Butera Coal Comapany → Shamon I; 1977-03-01 to 1977-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Grigas Charles & Joseph Butera → Shamon I; 1977-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Grigas Charles & Joseph Butera → Grigas & Butera Coal Comapany; 1977-03-01 to 1977-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Titan Coal & Coke Company Inc → Shamon I; 1977-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Balena Joseph → Shamon I; 1977-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Balena Joseph → Titan Coal & Coke Company Inc; 1977-09-01 to current/open; source msha-controller-operator-history