# Relationship history for MSHA mine 4104046

Current hierarchy: **Buster Mark → Buster Paving Company Inc → GREENVILLE 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Buster Paving Company Inc → GREENVILLE SAND PIT; 1999-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Buster Mark → GREENVILLE SAND PIT; 1999-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Buster Mark → Buster Paving Company Inc; 1999-01-01 to current/open; source msha-controller-operator-history