# Relationship history for MSHA mine 4605658

Current hierarchy: **Fry Andrew J → Hilea Coal Company → Hewett Fork #5**

- 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:** Valley Industries Inc → Hewett Fork #5; 1976-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S S Joe Burford Inc → Hewett Fork #5; 1977-10-01 to 1978-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Valley Industries Inc → S S Joe Burford Inc; 1977-10-01 to 1978-05-16; source msha-controller-operator-history
- **operator_operates_mine:** Pocahontas Second Corp → Hewett Fork #5; 1978-05-17 to 1979-08-29; source msha-controller-operator-history
- **controller_controls_mine:** Kimball William G → Hewett Fork #5; 1978-05-17 to 1979-08-29; source msha-controller-operator-history
- **controller_controls_operator:** Kimball William G → Pocahontas Second Corp; 1978-05-17 to 1979-08-29; source msha-controller-operator-history
- **operator_operates_mine:** Do Mi Coal Inc → Hewett Fork #5; 1979-08-30 to 1980-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Fry E B Et Al → Hewett Fork #5; 1979-08-30 to 1980-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Fry E B Et Al → Do Mi Coal Inc; 1979-08-30 to 1980-05-21; source msha-controller-operator-history
- **operator_operates_mine:** Hilea Coal Company → Hewett Fork #5; 1980-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fry Andrew J → Hewett Fork #5; 1980-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fry Andrew J → Hilea Coal Company; 1980-05-22 to current/open; source msha-controller-operator-history