# Relationship history for MSHA mine 3610251

Current hierarchy: **Eagle Materials Inc → Bullskin Stone & Lime LLC → Chieftain 2400**

- 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

- **controller_controls_mine:** Terrance C  Shallenberger Jr et al → Chieftain 2400; 2013-07-17 to 2025-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Bullskin Stone & Lime LLC → Chieftain 2400; 2018-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terrance C  Shallenberger Jr et al → Bullskin Stone & Lime LLC; 2018-06-20 to 2025-01-07; source msha-controller-operator-history
- **controller_controls_operator:** David S  Herrholtz et al → Bullskin Stone & Lime LLC; 2018-06-20 to 2025-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Eagle Materials Inc → Chieftain 2400; 2025-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eagle Materials Inc → Bullskin Stone & Lime LLC; 2025-01-08 to current/open; source msha-controller-operator-history