diff --git a/app/controllers/graders_controller.rb b/app/controllers/graders_controller.rb
--- a/app/controllers/graders_controller.rb
+++ b/app/controllers/graders_controller.rb
@@ -1,2 +1,18 @@
 class GradersController < ApplicationController
+
+  
+  before_filter :authenticate
+
+  def list
+    @grader_processes = GraderProcess.find(:all, 
+                                           :order => 'updated_at desc')
+    @stalled_processes = GraderProcess.find_stalled_process
+  end
+
+  def clear
+    grader_proc = GraderProcess.find(params[:id])
+    grader_proc.destroy if grader_proc!=nil
+    redirect_to :action => 'list'
+  end
+
 end