The term refractory-lined is identified in base64 scheme by the sequence cmVmcmFjdG9yeS1saW5lZA==, while the MD5 signature is equal to a4eba1d84e743346c2b0fbbecb70d215. The ASCII encoding of refractory-lined in hexadecimal notation is 726566726163746f72792d6c696e6564.