# Relationship history for MSHA mine 3900288

Current hierarchy: **Jeff  Doom; Scott  Doom → Wagner Building & Supply Company Inc → RAVINIA SAND 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

- **operator_operates_mine:** Wagner Building & Supply Company Inc → RAVINIA SAND PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Doom et al → RAVINIA SAND PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Doom et al → Wagner Building & Supply Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Doom et al → Wagner Building & Supply Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history