e) Forward Purchase Commitments We have a number of forward purchase commitments for the purchase of concentrates, for shipping and distribution of  products and for other process inputs, which are incurred in the normal course of business. During the year, we entered  into arrangements for the purchase of power in future periods for the expansion of our Quebrada Blanca Operations.  The majority of these contracts are subject to  force majeure  provisions. f) Sale of Interest in Gold Reserves and Resources In 2010, Carmen de Andacollo sold an interest in the gold reserves and resources of the Carmen de Andacollo Operation  to Royal Gold. Under the agreement, Royal Gold is entitled to 75% of the payable gold produced until total cumulative  production reaches 910,000 ounces of gold, and 50% thereafter. Based on the primary products we produce and our development projects, we have five reportable segments - copper,  coal, zinc, energy and corporate - which is the way we report information to our Chief Executive Officer. The corporate  segment includes all of our initiatives in other commodities, our corporate growth activities and groups that provide  administrative, technical, financial and other support to all of our business units. Other operating expenses include  general and administration costs, exploration, research and development, and other operating income (expense). Sales  between segments are carried out at arm’s length prices. 24. Segmented Information Generations 121 (Cdn$ in millions)  December 31, 2012 Copper Coal Zinc Energy Corporate Total Segment revenues $ 3,142 $ 4,647 $ 2,764 $ 4 $ – $ 10,557 Less: Inter-segment revenues – – (214) – – (214) Revenues 3,142 4,647 2,550 4 – 10,343 Gross profit  1,129 1,563 373 1 – 3,066 Other operating income (expenses) (39) (2) (14) – (226) (281) Profit from operations 1,090 1,561 359 1 (226) 2,785 Net finance expense (6) (24) (23) – (389) (442) Non-operating income (expenses) – – – – (848) (848) Share of losses of associates  –  –  –  (6)  (4)  (10) Profit before tax 1,084 1,537 336 (5) (1,467) 1,485 Capital expenditures 865 641 213 60 30 1,809 Goodwill 434 1,203 – – – 1,637 Total assets 8,054 17,332 4,632 1,828 2,771 34,617