Michigan Gov. Rick Snyder has rejected a call to shut down twin oil pipelines in a Great Lakes waterway so their external coating can be inspected for gaps. Snyder told the Michigan Pipeline Safety Advisory Board that the state could run short of propane, if the flow of oil and liquid natural gas through Enbridge Line 5, is halted during winter. The pipeline carries 23 million gallons daily between Wisconsin and Ontario. A 5-mile section runs through the waterway linking Lakes Michigan and Huron.