# Relationship history for MSHA mine 1601451

Current hierarchy: **Lanny G  Crowe → Industrial Aggregates of the Florida Parishes → Ind Aggs of the FL Parishes Plt #2**

- 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:** Gordon  Crowe et al → Ind Aggs of the FL Parishes Plt #2; 2004-07-20 to 2012-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Industrial Aggregates of the Florida Parishes → Ind Aggs of the FL Parishes Plt #2; 2007-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gordon  Crowe et al → Industrial Aggregates of the Florida Parishes; 2007-01-05 to 2012-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Lanny G  Crowe → Ind Aggs of the FL Parishes Plt #2; 2012-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lanny G  Crowe → Industrial Aggregates of the Florida Parishes; 2012-02-01 to current/open; source msha-controller-operator-history