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                    Closing price on 5/15/2012
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                    | Open | 6.30 |  
                    | High | 6.30 |  
                    | Low | 6.10 |  
                    | Volume | 12,500 |  
                    | Split-adjusted Price | 2.38 |  
                
             | 
 |  SCL Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/15/2012 | -0.40 / -6.15% | 6.30 | 6.30 | 6.10 | 6.10 | 6.15 | 2.38 | 12,500 |   |  
            | 5/14/2012 | -0.40 / -5.80% | 6.50 | 6.90 | 6.50 | 6.50 | 6.60 | 2.53 | 11,300 |   |  			
            | 5/11/2012 | -0.50 / -6.76% | 7.70 | 7.70 | 6.90 | 6.90 | 7.37 | 2.69 | 40,300 |   |  
            | 5/10/2012 | +0.30 / +4.23% | 7.40 | 7.50 | 7.10 | 7.40 | 7.39 | 2.88 | 58,100 |   |  			
            | 5/9/2012 | +0.10 / +1.43% | 7.20 | 7.20 | 6.60 | 7.10 | 6.82 | 2.77 | 3,700 |   |  
            | 5/8/2012 | +0.10 / +1.45% | 7.10 | 7.30 | 6.90 | 7.00 | 7.10 | 2.73 | 26,000 |   |  			
            | 5/7/2012 | +0.30 / +4.55% | 6.60 | 6.90 | 6.60 | 6.90 | 6.65 | 2.69 | 26,900 |   |  
            | 5/4/2012 | +0.30 / +4.76% | 6.10 | 6.60 | 6.10 | 6.60 | 6.16 | 2.57 | 4,200 |   |  			
            | 5/3/2012 | 0.00 / 0.00% | 6.00 | 6.30 | 6.00 | 6.30 | 6.01 | 2.46 | 6,800 |   |  
            | 5/2/2012 | +0.10 / +1.61% | 6.30 | 6.40 | 6.00 | 6.30 | 6.17 | 2.46 | 18,300 |   |  			
            | 4/27/2012 | +0.20 / +3.33% | 6.10 | 6.30 | 6.10 | 6.20 | 6.22 | 2.42 | 12,000 |   |  
            | 4/26/2012 | 0.00 / 0.00% | 6.30 | 6.40 | 6.00 | 6.00 | 6.22 | 2.34 | 7,100 |   |  			
            | 4/25/2012 | +0.30 / +5.26% | 5.90 | 6.00 | 5.70 | 6.00 | 5.91 | 2.34 | 46,500 |   |  
            | 4/24/2012 | +0.30 / +5.56% | 5.20 | 5.70 | 5.10 | 5.70 | 5.23 | 2.22 | 4,400 |   |  			
            | 4/23/2012 | -0.30 / -5.26% | 5.70 | 6.00 | 5.40 | 5.40 | 5.78 | 2.11 | 3,100 |   |  
            | 4/20/2012 | 0.00 / 0.00% | 5.80 | 5.90 | 5.70 | 5.70 | 5.79 | 2.22 | 77,000 |   |  			
            | 4/19/2012 | -0.40 / -6.56% | 5.80 | 5.80 | 5.70 | 5.70 | 5.75 | 2.22 | 35,200 |   |  
            | 4/18/2012 | -0.30 / -4.69% | 6.20 | 6.40 | 6.00 | 6.10 | 6.11 | 2.38 | 238,600 |   |  			
            | 4/17/2012 | 0.00 / 0.00% | 6.40 | 6.40 | 6.40 | 6.40 | 6.40 | 2.50 | 0 |   |  
            | 4/16/2012 | +0.40 / +6.67% | 6.00 | 6.40 | 6.00 | 6.40 | 6.22 | 2.50 | 63,600 |   |  			
            | 4/13/2012 | +0.30 / +5.26% | 5.60 | 6.00 | 5.60 | 6.00 | 5.75 | 2.34 | 235,100 |   |  
            | 4/12/2012 | +0.20 / +3.64% | 5.50 | 5.70 | 5.50 | 5.70 | 5.60 | 2.22 | 53,900 |   |  			
            | 4/11/2012 | +0.30 / +5.77% | 5.20 | 5.50 | 5.20 | 5.50 | 5.30 | 2.14 | 41,500 |   |  
            | 4/10/2012 | +0.20 / +4.00% | 5.10 | 5.20 | 5.00 | 5.20 | 5.07 | 2.03 | 35,500 |   |  			
            | 4/9/2012 | -0.30 / -5.66% | 5.20 | 5.20 | 5.00 | 5.00 | 5.06 | 1.95 | 2,800 |   |  
            | 4/6/2012 | 0.00 / 0.00% | 5.00 | 5.30 | 5.00 | 5.30 | 5.03 | 2.07 | 1,100 |   |  			
            | 4/5/2012 | +0.30 / +6.00% | 5.00 | 5.30 | 5.00 | 5.30 | 5.06 | 2.07 | 11,900 |   |  
            | 4/4/2012 | -0.10 / -1.96% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 1.95 | 1,000 |   |  			
            | 4/3/2012 | -0.10 / -1.92% | 5.20 | 5.20 | 4.90 | 5.10 | 5.01 | 1.99 | 17,500 |   |  
            | 3/30/2012 | 0.00 / 0.00% | 5.30 | 5.30 | 5.20 | 5.20 | 5.27 | 2.03 | 15,200 |   |  |