Gold Expiration Dates

I think the Gold future displayed on the Yahoo! Finance page is the future which has the most "open interest" or volume. I am not able to get that information from Yahoo! However if you go to the gold page on the CME Group website (http://www.cmegroup.com/trading/metals/precious/gold.html) the table there does have that information. So determining how to screen scrape Yahoo! for the gold price is a 2 step process. First, visit the CME Group Gold page to determine the contract with the highest "open interest" or volume. Once I know that, generate the correct ticker symbol to pass to Yahoo! to get the data for that Gold contract.