This log was laid on the ground and firmly held there; the fire-maker squatted in front, and with the flat piece rubbed edgeways across the opening in the log.

The sawdust fell quickly into the opening.

After about a minute and a half's rubbing a smoke started out.

After rubbing on a little longer the fire-maker took a handful of dry grass, emptied the smoking sawdust and dry grass into it, waved it about, and in three and a half minutes from starting the process I have seen a blaze.

Sometimes it has taken longer, but just under five minutes is the longest time I have ever seen it take.
They use pine too, I believe, but whenever I timed them it was Nummaybirah they were using.
The boys pick up the woodcraft of the tribes when they begin going out with the men.