# Relationship history for MSHA mine 1103236

Current hierarchy: **Fred Weber, Inc. → Bluff City Minerals, LLC → Mississippi Lime Co-Prairie du Rocher**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Fred Weber, Inc. → Mississippi Lime Co-Prairie du Rocher; 2002-12-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bluff City Minerals, LLC → Mississippi Lime Co-Prairie du Rocher; 2011-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred Weber, Inc. → Bluff City Minerals, LLC; 2011-03-03 to current/open; source msha-controller-operator-history