# Relationship history for MSHA mine 4300108

Current hierarchy: **James D  Danyow; Larry E  Danyow → CHAMPLAIN CONSTRUCTION CO INC → GRAVEL 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Champlain Construction Co Inc → GRAVEL PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James D  Danyow  et al → GRAVEL PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James D  Danyow  et al → Champlain Construction Co Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry E  Danyow  et al → Champlain Construction Co Inc; 1950-01-01 to current/open; source msha-controller-operator-history