# Relationship history for MSHA mine 3002852

Current hierarchy: **Town Of Crown Point-NY → Town Of Crown Point → MACKAY 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:** Stephen L Mac Kay → MACKAY PIT; 1988-07-01 to 1992-08-26; source msha-controller-operator-history
- **controller_controls_mine:** Stephen L  Mac Kay → MACKAY PIT; 1988-07-01 to 1992-08-26; source msha-controller-operator-history
- **controller_controls_operator:** Stephen L  Mac Kay → Stephen L Mac Kay; 1988-07-01 to 1992-08-26; source msha-controller-operator-history
- **controller_controls_mine:** Town Of Crown Point-NY → MACKAY PIT; 1988-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Town Of Crown Point → MACKAY PIT; 1992-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Crown Point-NY → Town Of Crown Point; 1992-08-27 to current/open; source msha-controller-operator-history