# Relationship history for MSHA mine 3100036

Current hierarchy: **William L  McNeely Jr. → Nantahala Talc & Limestone Company Inc → Hewitt Quarry**

- 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:** Nantahala Talc & Limestone Company Inc → Hewitt Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jack R Herbert → Hewitt Quarry; 1950-01-01 to 2006-11-05; source msha-controller-operator-history
- **controller_controls_operator:** Jack R Herbert → Nantahala Talc & Limestone Company Inc; 1950-01-01 to 2006-11-05; source msha-controller-operator-history
- **controller_controls_mine:** William L  McNeely Jr. et al → Hewitt Quarry; 2006-11-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William L  McNeely Jr. et al → Nantahala Talc & Limestone Company Inc; 2006-11-06 to current/open; source msha-controller-operator-history