Operating profit from ongoing operations increased in the fourth quarter of 2012 compared to the fourth quarter of 2011 primarily as a result of the addition of AACOA. AACOA had operating profit of $0.8 million for the fourth quarter of 2012, which included amortization expense of $0.5 million. Operating profit from ongoing operations increased in 2012 versus 2011 due to improved profitability from the shutdown of our Kentland manufacturing facility, better pricing, lower energy costs and the addition of AACOA. The net impact from the shutdown of our Kentland manufacturing facility had a favorable impact of approximately $2.5 million in 2012.
Capital expenditures for Bonnell Aluminum were $2.3 million in 2012 compared with $2.7 million in 2011. Capital expenditures are projected to be approximately $19 million in 2013, which includes approximately $15 million for an 18-month project that will expand our capacity at the manufacturing facility in Newnan, Georgia. This additional capacity will primarily serve the automotive industry. Depreciation expense was $9.5 million in 2012 compared with $8.3 million in 2011, and is projected to be approximately $7 million in 2013. Higher depreciation expense in 2012 is primarily related to approximately $2.4 million in accelerated depreciation on property, plant and equipment at the Kentland manufacturing facility.
The Other segment previously included the mitigation banking business, which is also referred to as Falling Springs. On November 20, 2012, we sold our membership interests in Falling Springs to Arc Ventures, LC, a Virginia limited liability company affiliated with John D. Gottwald, a member of Tredegar’s Board of Directors, for cash and stock proceeds of $16.6 million. The corresponding loss on sale of $3.1 million, which included transaction-related expenses of $0.5 million, and the results of operations related to Falling Springs have been classified as discontinued operations for all periods presented.