# Relationship history for MSHA mine 1901135

Current hierarchy: **Thomas R Hathaway → HATHAWAY CONSTRUCTION CORPORATION → HATHAWAY CONSTRUCTION CORPORATION**

- 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:** Hathaway Construction Corporation → HATHAWAY CONSTRUCTION CORPORATION; 2004-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas R Hathaway → HATHAWAY CONSTRUCTION CORPORATION; 2004-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas R Hathaway → Hathaway Construction Corporation; 2004-05-04 to current/open; source msha-controller-operator-history