# Relationship history for MSHA mine 2601098

Current hierarchy: **Chromalloy American Corp → Chromalloy Mining & Milling → Jungle Area**

- 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:** Chromalloy Mining & Minerals Inc → Jungle Area; 1950-01-01 to 1978-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Chromalloy American Corp → Jungle Area; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chromalloy American Corp → Chromalloy Mining & Minerals Inc; 1950-01-01 to 1978-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Eager Beaver Mine Corp → Jungle Area; 1978-04-01 to 1981-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Ala John F & Albert K Supp Et Al → Jungle Area; 1978-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ala John F & Albert K Supp Et Al → Eager Beaver Mine Corp; 1978-04-01 to 1981-08-24; source msha-controller-operator-history
- **operator_operates_mine:** Chromalloy Mining & Milling → Jungle Area; 1981-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chromalloy American Corp → Chromalloy Mining & Milling; 1981-08-25 to current/open; source msha-controller-operator-history