# Relationship history for MSHA mine 3003254

Current hierarchy: **Michael  Dendis; Anthony  Dendis; Joe  Dendis → Dendis Sand & Gravel, Inc. → Dendis Newark Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Joseph  Spezio → Dendis Newark Pit; 1981-11-18 to 2013-05-05; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Dendis → Dendis Newark Pit; 1997-06-01 to 2024-12-31; source msha-controller-operator-history
- **operator_operates_mine:** D. A .S.  Sand & Gravel → Dendis Newark Pit; 1998-11-01 to 2013-05-05; source msha-controller-operator-history
- **controller_controls_mine:** David  Scheer → Dendis Newark Pit; 1998-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Scheer → D. A .S.  Sand & Gravel; 1998-11-01 to 2013-05-05; source msha-controller-operator-history
- **operator_operates_mine:** ELAM Sand & Gravel Corp. → Dendis Newark Pit; 2013-05-06 to 2015-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Loretta J  Spezio → Dendis Newark Pit; 2013-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loretta J  Spezio → ELAM Sand & Gravel Corp.; 2013-05-06 to 2015-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Spezio → ELAM Sand & Gravel Corp.; 2013-05-06 to 2013-05-05; source msha-controller-operator-history
- **operator_operates_mine:** Dendis Sand & Gravel, Inc. → Dendis Newark Pit; 2015-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Dendis → Dendis Sand & Gravel, Inc.; 2015-06-04 to 2024-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Dendis et al → Dendis Newark Pit; 2025-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Dendis et al → Dendis Sand & Gravel, Inc.; 2025-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Dendis et al → Dendis Sand & Gravel, Inc.; 2025-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Dendis et al → Dendis Sand & Gravel, Inc.; 2025-01-01 to current/open; source msha-controller-operator-history