This one, although the tragedy didn't happen *in* the mine..:

The Aberfan Coal Tip Tragedy
(Thom Parrott)

The mining men of Wales are hardy, strong and bold
And they tunnel in the earth and make it yield its coal
But in the town of Aberfan, it's dearer now than gold
For one generation for profit has been sold

Chorus:
How many died in Aberfan
When the slag heap came tumbling down
How many children will never grow old
And how many lives purchased how many tons of coal

The little school of Pantglas lay where the mountain loomed
And some two hundred children took their classes in its rooms
The day fall recess to begin, they went to meet their doom
Not knowing the green hollow would soon become their tomb

Chorus

It was just 9:00 A.M. when they opened up the door
And in came the students, two hundred, maybe more
But nobody knew then what the mountain had in store
The lucky ones were tardy, the others are no more

Chorus

"I played with my big dog and I played with my cat,"
Signed "Paul, October 21," there's nothing after that
For the coal tip came down, and everyone was trapped
And now there's only coal slag where little Paul once sat

Chorus

In eighteen hundred and seventy-four, the first pit shaft went down
And they started piling mining waste on the slopes above the town
And everybody knew that the practice was unsound
But for ninety-two years no better place was found

Chorus

The National Coal Board said they'd known from the first
That the coal tips they'd permitted were a worry and a curse
But I've heard that speech so many times, and it always sounds rehearsed
If the coal tip was a murderer, the Coal Board's crime was worse

Chorus

The children were pretty, the children were fine
The children went to school in the shadow of the mine
But with the coal tip up above, they were running out of time
And they were buried alive by the Ministry of Mines.

Chorus

Best wishes,

Bente