# Relationship history for MSHA mine 2601504

Current hierarchy: **Loren E  Hunewill → H E Hunewill Construction Company Inc → DRY CANYON MINE**

- 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

- **controller_controls_mine:** Chromalloy American Corp → DRY CANYON MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dale  Aslett → DRY CANYON MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chromalloy Mining & Milling → DRY CANYON MINE; 1978-03-09 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Chromalloy American Corp → Chromalloy Mining & Milling; 1978-03-09 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Loren E  Hunewill  et al → DRY CANYON MINE; 1978-03-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dale Aslett Sand & Gravel Inc → DRY CANYON MINE; 1984-09-12 to 1995-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Dale  Aslett → Dale Aslett Sand & Gravel Inc; 1984-09-12 to 1995-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Ranstrom Mining & Construction Inc → DRY CANYON MINE; 1995-05-01 to 2000-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Gene M  Ranstrom → DRY CANYON MINE; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene M  Ranstrom → Ranstrom Mining & Construction Inc; 1995-05-01 to 2000-07-16; source msha-controller-operator-history
- **operator_operates_mine:** H E Hunewill Construction Company Inc → DRY CANYON MINE; 2000-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loren E  Hunewill  et al → H E Hunewill Construction Company Inc; 2000-07-17 to current/open; source msha-controller-operator-history