An official patent survey of a lode or placer mining claim or claims by a United States mineral surveyor may be credited to annual assessment work or labor, but in no case shall the credit for such survey and its attendant expense exceed the required assessment for one (1) year on the claim or claims surveyed. When credit is sought for such work or improvement, the claimant must file in the recorder’s office in the county in which such claim is situated the affidavit of such United States mineral surveyor, showing the cost of such survey, and when so filed the actual cost of such survey shall be deemed and considered as labor and improvements done and performed upon said claim or claims.