# Relationship history for MSHA mine 1300049

Current hierarchy: **HBM Holdings Company → Calcium Products, LLC → Calcium Products Plant**

- 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:** Hallett Construction Company → Calcium Products Plant; 1950-01-01 to 1981-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Hallett Construction Company → Calcium Products Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hallett Construction Company → Hallett Construction Company; 1950-01-01 to 1981-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Larry E  Moore → Calcium Products Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Midwest Limestone Company Inc → Calcium Products Plant; 1981-05-12 to 2003-02-19; source msha-controller-operator-history
- **controller_controls_operator:** Larry E  Moore → Midwest Limestone Company Inc; 1981-05-12 to 2003-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Larry E  Moore → Calcium Products Plant; 2000-10-01 to 2013-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Calcium Products, LLC → Calcium Products Plant; 2003-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry E  Moore → Calcium Products, LLC; 2003-02-20 to 2013-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Calcium Holdings Inc → Calcium Products Plant; 2013-03-29 to 2026-01-21; source msha-controller-operator-history
- **controller_controls_operator:** Calcium Holdings Inc → Calcium Products, LLC; 2013-03-29 to 2026-01-21; source msha-controller-operator-history
- **controller_controls_mine:** HBM Holdings Company → Calcium Products Plant; 2026-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** HBM Holdings Company → Calcium Products, LLC; 2026-01-22 to current/open; source msha-controller-operator-history