What does the cryptic crossword clue "Fuel engineer can't hear it (10)" mean?

The definition is "Fuel". The wordplay uses an anagram. anagram of CAN'T + HEAR + IT = ANTHRACITE; definition: "Fuel" The answer is ANTHRACITE.

Fuel engineer can't hear it (10)

Daily Mail Cryptic #16657 | 25 Across | 2021-09-06 flower