C.R.S. § 8-41-206: Disability beginning five years after injury.

Any disability beginning more than five years after the date of injury shall be conclusively presumed not to be due to the injury, except in cases of disability or death resulting from exposure to radioactive materials, substances, or machines or to fissionable materials, or any type of malignancy caused thereby, or from poisoning by uranium or its compounds, or from asbestosis, silicosis, or anthracosis.