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                    Closing price on 3/20/2012
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        |           
                
                    | Open | 5.10 |  
                    | High | 5.20 |  
                    | Low | 5.00 |  
                    | Volume | 25,100 |  
                    | Split-adjusted Price | 1.95 |  
                
             | 
 |  SCL Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/20/2012 | -0.20 / -3.85% | 5.10 | 5.20 | 5.00 | 5.00 | 5.10 | 1.95 | 25,100 |   |  
            | 3/19/2012 | -0.20 / -3.70% | 5.40 | 5.40 | 5.00 | 5.20 | 5.29 | 2.03 | 13,300 |   |  			
            | 3/16/2012 | +0.10 / +1.89% | 5.30 | 5.40 | 5.30 | 5.40 | 5.34 | 2.11 | 12,800 |   |  
            | 3/15/2012 | -0.10 / -1.85% | 5.30 | 5.30 | 5.30 | 5.30 | 5.30 | 2.07 | 12,400 |   |  			
            | 3/14/2012 | -0.10 / -1.82% | 5.40 | 5.50 | 5.20 | 5.40 | 5.39 | 2.11 | 16,200 |   |  
            | 3/13/2012 | +0.20 / +3.77% | 5.50 | 5.50 | 5.40 | 5.50 | 5.49 | 2.14 | 9,100 |   |  			
            | 3/12/2012 | -0.40 / -7.02% | 5.60 | 5.60 | 5.30 | 5.30 | 5.59 | 2.07 | 14,800 |   |  
            | 3/9/2012 | +0.10 / +1.79% | 5.50 | 5.70 | 5.50 | 5.70 | 5.61 | 2.22 | 17,700 |   |  			
            | 3/8/2012 | -0.20 / -3.45% | 5.60 | 5.70 | 5.60 | 5.60 | 5.60 | 2.18 | 9,300 |   |  
            | 3/7/2012 | -0.10 / -1.69% | 5.80 | 5.80 | 5.70 | 5.80 | 5.73 | 2.26 | 9,100 |   |  			
            | 3/6/2012 | 0.00 / 0.00% | 6.30 | 6.30 | 5.80 | 5.90 | 5.85 | 2.30 | 22,300 |   |  
            | 3/5/2012 | +0.10 / +1.72% | 5.80 | 5.90 | 5.80 | 5.90 | 5.88 | 2.30 | 20,300 |   |  			
            | 3/2/2012 | +0.20 / +3.57% | 5.50 | 5.80 | 5.50 | 5.80 | 5.60 | 2.26 | 700 |   |  
            | 3/1/2012 | +0.30 / +5.66% | 5.60 | 5.60 | 5.60 | 5.60 | 5.60 | 2.18 | 3,000 |   |  			
            | 2/29/2012 | -0.10 / -1.85% | 5.30 | 5.30 | 5.30 | 5.30 | 5.30 | 2.07 | 500 |   |  
            | 2/28/2012 | -0.20 / -3.57% | 5.60 | 5.60 | 5.40 | 5.40 | 5.48 | 2.11 | 1,300 |   |  			
            | 2/27/2012 | +0.20 / +3.70% | 5.40 | 5.70 | 5.40 | 5.60 | 5.58 | 2.18 | 6,000 |   |  
            | 2/24/2012 | -0.40 / -6.90% | 5.60 | 5.60 | 5.40 | 5.40 | 5.44 | 2.11 | 19,100 |   |  			
            | 2/23/2012 | +0.30 / +5.45% | 5.90 | 5.90 | 5.30 | 5.80 | 5.38 | 2.26 | 24,500 |   |  
            | 2/22/2012 | -0.40 / -6.78% | 5.60 | 5.80 | 5.50 | 5.50 | 5.59 | 2.14 | 13,900 |   |  			
            | 2/21/2012 | 0.00 / 0.00% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 2.30 | 500 |   |  
            | 2/20/2012 | +0.30 / +5.36% | 5.90 | 5.90 | 5.90 | 5.90 | 5.90 | 2.30 | 100 |   |  			
            | 2/17/2012 | -0.40 / -6.67% | 5.60 | 5.60 | 5.60 | 5.60 | 5.60 | 2.18 | 300 |   |  
            | 2/16/2012 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 0 |   |  			
            | 2/15/2012 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 0 |   |  
            | 2/14/2012 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 0 |   |  			
            | 2/13/2012 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 0 |   |  
            | 2/10/2012 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 0 |   |  			
            | 2/9/2012 | 0.00 / 0.00% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 1,200 |   |  
            | 2/8/2012 | +0.20 / +3.45% | 6.00 | 6.00 | 6.00 | 6.00 | 6.00 | 2.34 | 100 |   |  |