# Relationship history for MSHA mine 4200003

Current hierarchy: **Raymond  Ames → Ames Construction, Inc. → Lake Point Quarry**

- 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:** Cedarstrom Calcite & Clay Corp → Lake Point Quarry; 1950-01-01 to 2006-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Pauline  Pugh → Lake Point Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pauline  Pugh → Cedarstrom Calcite & Clay Corp; 1950-01-01 to 2006-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Ames → Lake Point Quarry; 1991-05-01 to 2019-01-30; source msha-controller-operator-history
- **operator_operates_mine:** Calcite Exploration LLC → Lake Point Quarry; 2006-07-01 to 2010-04-25; source msha-controller-operator-history
- **controller_controls_mine:** Dan R  Cary  et al → Lake Point Quarry; 2006-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan R  Cary  et al → Calcite Exploration LLC; 2006-07-01 to 2010-04-25; source msha-controller-operator-history
- **controller_controls_operator:** Drew L  Downs  et al → Calcite Exploration LLC; 2006-07-01 to 2010-04-25; source msha-controller-operator-history
- **operator_operates_mine:** Ames Construction, Inc. → Lake Point Quarry; 2010-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Ames → Ames Construction, Inc.; 2010-04-26 to 2019-01-30; source msha-controller-operator-history
- **controller_controls_mine:** Raymond  Ames → Lake Point Quarry; 2019-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond  Ames → Ames Construction, Inc.; 2019-01-31 to current/open; source msha-controller-operator-history