The name 'Raycast' does not denote a valid type ('not found')

Ok, So i have a simple enough script for Mining in my game but for some reason this error pops up.

The name 'Raycast' does not denote a valid type ('not found') on 25,11

So here is my script and if you could please help me out with what i might have done wrong the would be great!

Error on 25,11

 #pragma strict
 
 var test : Transform;
 var Character : Transform;
 var maxhit : float = 1.5;
 var RayCenter : Transform;
 var attack : Animation; 
 var idle : Animation; 
 var Distance : float;
 
 function Update () 
 {
     if(Input.GetButton("Fire1"))
         {
         animation.Play("attack");
         }
         
         if(Animation.isPlaying == false);
         {
         Animation.CossFade("idle");
         }
 }
 function mine()
 {
 var hit : Raycast;
 if(Physics.Raycast(RayCenter.transform.position, RayCenter.transform.TransformDirection(Vector3.forward),hit))
     {
     Distance = hit.distance;
     if(Distance <= maxhit);
         {
         hit.transform.SendMessage("Mining",Character, SendMessageOptions.DontRequireReceiver);
         }
     }
 }