# Relationship history for MSHA mine 3301579

Current hierarchy: **Arden J  Neer Jr; Andrew J  Neer → Neer's Sand & Gravel LLC → Neer's Sand & Gravel 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Neer's Sand & Gravel → Neer's Sand & Gravel LLC; 1950-01-01 to 2014-02-26; source msha-controller-operator-history
- **controller_controls_mine:** Arden J  Neer Sr → Neer's Sand & Gravel LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arden J  Neer Sr → Neer's Sand & Gravel; 1950-01-01 to 2014-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Neer's Sand & Gravel LLC → Neer's Sand & Gravel LLC; 2014-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arden J  Neer Jr et al → Neer's Sand & Gravel LLC; 2014-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arden J  Neer Jr et al → Neer's Sand & Gravel LLC; 2014-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andrew J  Neer et al → Neer's Sand & Gravel LLC; 2014-02-27 to current/open; source msha-controller-operator-history