It appears the 'live coal' is a reference to the 'word of God' - If you look at the attached link, scroll down past the different translations to the commentaries.
It could mean the geological spread of coal seams in the ground. Or it could mean the process of getting the coal from the mines to the consumers.
Isaiah means "Yahweh is Salvation." The Book of Isaiah is often referred to as the Gospel according to Isaiah. Isaiah is the first of the Major Prophets in the English Bible.
These verses deal with the spiritual and literal rebuilding of Jerusalem and Israel.
Abbreviation for Isaiah is Isa.
Isaiah 39:8 KJVThen said Hezekiah to Isaiah, Good is the word of the LORD which thou hast spoken. He said moreover, For there shall be peace and truth in my days.Hezekiah is pleased to know that the things that Isaiah has just told him, the word of the LORD, or specific word for word quote of what the LORD (Yahweh) said to say to Hezekiah, will not happen while Hezekiah is still alive, "in my days".
The prophet Isaiah had his lips touched with a live coal by a seraphim in a vision described in the Bible, symbolizing the purification of his lips before being commissioned for his prophetic ministry.
Isaiah Atienza is 6' 1".
Isaiah Garnica is 6' 1".
Isaiah Gray is 6' 1".
Isaiah Kacyvenski is 6' 1".
NBA player Isaiah Canaan is 6'-01''.
He heard God saying "whom will I send," and he said "Here am I; send me." Isaiah 6:8.
Isaiah Lester is 6' 2 1/2".
NFL player Isaiah Frey is 6'-01''.
NFL player Isaiah Burse is 6'-01''.
NFL player Jesse Williams is 6'-03''.
The reason is given in the following verse. "Then one of the seraphim flew unto me, with a glowing coal in his hand which he had taken with the tongs from the altar; and he touched my mouth with it, and said: this has touched your lips; and your iniquity is taken away, and your sin is atoned."