You can use any wood chips you like. Hickory, Apple Wood, Mesquite, will all work nicely. They should be soaked for at least 8 hours or overnight.
You'll also need:
- heavy-duty aluminum foil
- two 8-ounce boneless salmon fillets, skin on
- salt and pepper, to taste
- charcoal grill with lid
- charcoal, or charcoal brickets
Warning: DO NOT attempt this with a gas grill!