Just like every other TM or HM. Just give it to a pokemon that can learn that move.
no
You can find TM Dig at the Ruin Maniac Cave.
In Pokémon Emerald version you do not buy the TM dig. Instead you get it by talking to the Fossil Maniac.
A boy in the fossil maniacs house gives this TM to you this house is west from fallarbor town.
Dig is TM 28.
keep looking its hidden
no you can not get a secend TM dig
TM 28 is dig
As far as I know the only way to get another dig is to trade for a Pokemon that is holding the TM dig or to get it from another version
YOu can dig underground for it but its rare.
the TM dig is number 28
no thunder fang is not a TM in Pokemon pearl no thunder fang is not a TM in Pokemon pearl