# Relationship history for MSHA mine 3300090

Current hierarchy: **Cris  Sidwell → Cumberland Limestone LLC → Cumberland Limestone LLC**

- 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:** King Limestone Inc → Cumberland Limestone LLC; 1950-01-01 to 2005-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Duane  King → Cumberland Limestone LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Duane  King → King Limestone Inc; 1950-01-01 to 2005-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Limestone LLC → Cumberland Limestone LLC; 2005-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cris  Sidwell → Cumberland Limestone LLC; 2005-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cris  Sidwell → Cumberland Limestone LLC; 2005-03-14 to current/open; source msha-controller-operator-history