# Relationship history for MSHA mine 1200656

Current hierarchy: **Holcim Ltd → Fidler Inc → Fidler, Inc.**

- 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:** Fidler Inc → Fidler, Inc.; 1950-01-01 to 1992-08-11; source msha-controller-operator-history
- **controller_controls_mine:** John L  Fiddler  et al → Fidler, Inc.; 1950-01-01 to 1992-08-11; source msha-controller-operator-history
- **controller_controls_operator:** John L  Fiddler  et al → Fidler Inc; 1950-01-01 to 1992-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Aggregate Industries PLC → Fidler, Inc.; 1989-05-23 to 2009-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Fidler Inc → Fidler, Inc.; 1992-08-12 to 1995-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Fidler Inc; 1992-08-12 to 1995-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Fidler Inc → Fidler, Inc.; 1995-06-12 to 2000-02-29; source msha-controller-operator-history
- **controller_controls_mine:** Nova Materials Inc → Fidler, Inc.; 1995-06-12 to 2000-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Nova Materials Inc → Fidler Inc; 1995-06-12 to 2000-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Fidler Inc → Fidler, Inc.; 2000-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Fidler Inc; 2000-03-01 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Fidler, Inc.; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Fidler Inc; 2009-04-30 to 1995-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Fidler Inc; 2009-04-30 to current/open; source msha-controller-operator-history