# Relationship history for MSHA mine 3304815

Current hierarchy: **John  Annichenni → City Stone LLC → City Stone 534 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

- **controller_controls_mine:** John  Annichenni et al → City Stone 534 Pit; 2001-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** City Stone LLC → City Stone 534 Pit; 2025-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Annichenni et al → City Stone LLC; 2025-04-09 to current/open; source msha-controller-operator-history