# Relationship history for MSHA mine 4105297

Current hierarchy: **Donald P.  Martinez; David C.  McCutcheon → M & M Crushed Stone Products, Inc. → BC WARD 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:** Donald P.  Martinez et al → BC WARD PIT; 2012-04-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & M Crushed Stone Products, Inc. → BC WARD PIT; 2017-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald P.  Martinez et al → M & M Crushed Stone Products, Inc.; 2017-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David C.  McCutcheon et al → M & M Crushed Stone Products, Inc.; 2017-09-01 to current/open; source msha-controller-operator-history