Related Clues:

• All that's left in the end of 1 across
• Would, by the sound of it, have been fired
• Fired with a call for silence
• The sort of ore one would not find burnt in the sea
• All that's left of a forest fire?
• The kind of ore that would never have been fired at sea
• Having been fired, but not like 23 across
• That's what you get if you're fired
• A call for silence where there's been firing
• With an injunction to keep it quiet, one has been fired
• A call for silence when one has been fired
• A call for quiet firewood
• It's been fired, but not like 11 across
• The way the aspirate has been fired
• All that's left after the forest fire