Clearstone Engineering Ltd.

Clearstone is an international environmental engineering firm Clearstone is an international environmental engineering firm specializing in air emission assessments and industrial air pollution control. We offer advanced engineering solutions and source-testing services to the natural gas, petroleum, petrochemical and energy industries. Our goal is to help clients evaluate and resolve their air emission problems. industrial air pollution control. We offer advanced engineering solutions and source-testing services to the natural gas, petroleum, petrochemical and energy industries. Our goal is to help clients evaluate and resolve their air emission problems.