Simnply place included folder in you C:\Users\(username)\AppData\Local\Mining\Saved\SaveGames
If you cant see your AppData folder, 
Windows 11:
Open File Explorer  from the taskbar. 
Select View > Show > Hidden items.

Windows 10:
Open File Explorer from the taskbar. 
Select View > Options > Change folder and search options.
Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.