 One of the darker aspects of the county's history involved the Bradley Transportation Company when one of their cargo ships, the "Carl D. Bradley" sank on Lake Michigan during a windstorm in November 1958 with the loss of 33 lives, 29 of whom resided in Presque Isle County (26 were from Rogers City, two were from Onaway, and one was from Metz Township).Today the world's largest limestone processing plant is in Rogers City, which is also a major Great Lakes Port.This is the best natural harbor on Lake Huron between Port Huron and Mackinaw City.