# Relationship history for MSHA mine 0801317

Current hierarchy: **Chandler Construction Company Inc → Owl's Head Sod Farm, LTD, LLP → Owl's Head Mine**

- 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:** Owl's Head Sod Farm, LTD, LLP → Owl's Head Mine; 2002-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chandler Construction Company Inc → Owl's Head Mine; 2002-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chandler Construction Company Inc → Owl's Head Sod Farm, LTD, LLP; 2002-11-19 to current/open; source msha-controller-operator-history