# Relationship history for MSHA mine 0801330

Current hierarchy: **Crystina  Bass; Christopher  Bass → BAT Construction Group LLC → No Name Key Rock 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:** A & B  Land Investments Inc → No Name Key Rock Pit; 2004-08-04 to 2009-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Phillip A  Braeunig → No Name Key Rock Pit; 2004-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillip A  Braeunig → A & B  Land Investments Inc; 2004-08-04 to 2009-02-28; source msha-controller-operator-history
- **operator_operates_mine:** BAT Construction Group LLC → No Name Key Rock Pit; 2009-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Crystina  Bass  et al → No Name Key Rock Pit; 2009-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Crystina  Bass  et al → BAT Construction Group LLC; 2009-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher  Bass  et al → BAT Construction Group LLC; 2009-03-01 to current/open; source msha-controller-operator-history