# Relationship history for MSHA mine 2900415

Current hierarchy: **Claudia A  Waide → Waide Sand & Gravel Company → WAIDE SAND & GRAVEL**

- 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

- **operator_operates_mine:** Mc Carty Construction Company Inc → WAIDE SAND & GRAVEL; 1950-01-01 to 1979-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Bill  McCarty → WAIDE SAND & GRAVEL; 1950-01-01 to 1979-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Bill  McCarty → Mc Carty Construction Company Inc; 1950-01-01 to 1979-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Beavers Sand & Gravel Of Roswell Inc → WAIDE SAND & GRAVEL; 1979-10-10 to 1994-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Beavers Robert & A E → WAIDE SAND & GRAVEL; 1979-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beavers Robert & A E → Beavers Sand & Gravel Of Roswell Inc; 1979-10-10 to 1994-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Waide Sand & Gravel Company → WAIDE SAND & GRAVEL; 1994-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James A  Waide et al → WAIDE SAND & GRAVEL; 1994-03-14 to 2024-06-10; source msha-controller-operator-history
- **controller_controls_operator:** James A  Waide et al → Waide Sand & Gravel Company; 1994-03-14 to 2024-06-10; source msha-controller-operator-history
- **controller_controls_mine:** Claudia A  Waide → WAIDE SAND & GRAVEL; 2024-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Claudia A  Waide → Waide Sand & Gravel Company; 2024-06-11 to current/open; source msha-controller-operator-history