I just have a look in Local.xml, i scroll down until i found this:
<IntResources href='Rand.Crate.Airstrike'/>
<IntResources href='Rand.Crate.Armageddon'/>
<IntResources href='Rand.Crate.BananaBomb'/>
<IntResources href='Rand.Crate.BaseballBat'/>
<IntResources href='Rand.Crate.Bazooka'/>
<IntResources href='Rand.Crate.BridgeKit'/>
<IntResources href='Rand.Crate.ChangeWorm'/>
<IntResources href='Rand.Crate.ClusterGrenade'/>
<IntResources href='Rand.Crate.ConcreteDonkey'/>
<IntResources href='Rand.Crate.CrateShower'/>
<IntResources href='Rand.Crate.DoubleDamage'/>
<IntResources href='Rand.Crate.DoubleTurnTime'/>
<IntResources href='Rand.Crate.Dragonball'/>
<IntResources href='Rand.Crate.Dynamite'/>
<IntResources href='Rand.Crate.Earthquake'/>
<IntResources href='Rand.Crate.FirePunch'/>
<IntResources href='Rand.Crate.FlameThrower'/>
<IntResources href='Rand.Crate.Freeze'/>
<IntResources href='Rand.Crate.GasCanister'/>
<IntResources href='Rand.Crate.Girder'/>
<IntResources href='Rand.Crate.Grenade'/>
<IntResources href='Rand.Crate.HolyHandGrenade'/>
<IntResources href='Rand.Crate.HomingMissile'/>
<IntResources href='Rand.Crate.HomingPidgeon'/>
<IntResources href='Rand.Crate.Jetpack'/>
<IntResources href='Rand.Crate.Landmine'/>
<IntResources href='Rand.Crate.LaserSight'/>
<IntResources href='Rand.Crate.LowGravity'/>
<IntResources href='Rand.Crate.MadCow'/>
<IntResources href='Rand.Crate.MagicBullet'/>
<IntResources href='Rand.Crate.MailStrike'/>
<IntResources href='Rand.Crate.MineStrike'/>
<IntResources href='Rand.Crate.MingVase'/>
<IntResources href='Rand.Crate.Minigun'/>
<IntResources href='Rand.Crate.Mortar'/>
<IntResources href='Rand.Crate.Napalm'/>
<IntResources href='Rand.Crate.NinjaRope'/>
<IntResources href='Rand.Crate.NuclearBomb'/>
<IntResources href='Rand.Crate.OldWoman'/>
<IntResources href='Rand.Crate.Parachute'/>
<IntResources href='Rand.Crate.PetrolBomb'/>
<IntResources href='Rand.Crate.Prod'/>
<IntResources href='Rand.Crate.QuickWalk'/>
<IntResources href='Rand.Crate.ScalesOfJustice'/>
<IntResources href='Rand.Crate.Sheep'/>
<IntResources href='Rand.Crate.SheepStrike'/>
<IntResources href='Rand.Crate.Shotgun'/>
<IntResources href='Rand.Crate.SkipGo'/>
<IntResources href='Rand.Crate.SuperBananaBomb'/>
<IntResources href='Rand.Crate.SuperSheep'/>
<IntResources href='Rand.Crate.Surrender'/>
<IntResources href='Rand.Crate.Teleport'/>
<IntResources href='Rand.Crate.Uzi'/>
<IntResources href='Rand.Crate.VikingAxe'/>

What it means???:p:p:p

Maybe T17 WANTED them to be in since they are all weapons from W3D, but have probably been removed because they didn't fit to the game.

@Thurbo, probably that, and they added new weapons... right? I don't own worms 3d so idk.