No plat was filed for Flat .
The town site rests on mining claims , so the existence of Flat may contravene the law , but the U.S. Post Office acknowledged the community and served its few residents with an office until the year 2000 .
No plat was filed for Flat , and the town site rests on mining claims , so the existence of Flat may contravene the law , but the U.S. Post Office acknowledged the community and served its few residents with an office until the year 2000 .