# Relationship history for MSHA mine 3004032

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

- 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

- **controller_controls_mine:** Joe  Dendis → Dendis Pond; 1997-06-01 to 2024-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Dendis Sand & Gravel, Inc. → Dendis Pond; 2019-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Dendis → Dendis Sand & Gravel, Inc.; 2019-04-19 to 2024-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Dendis et al → Dendis Pond; 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