http://www.ehow.com/how_6783295_open-ostrich-egg.html
EXCERPT: If you happen to get your hands on an ostrich egg, don’t be fooled by the passing resemblance to the familiar chicken egg. With a shell more than 10 times thicker [...] it takes some serious work to crack an ostrich egg. [...] Using a cordless power drill, make a ½-inch hole in the bottom of the shell [...] Although the typical ostrich egg is equivalent in volume to 24 chicken eggs, it is not a straightforward substitute in recipes where a large number of eggs are required. Not only does an ostrich egg take some two hours to hard boil [...]
EXCERPT: If you happen to get your hands on an ostrich egg, don’t be fooled by the passing resemblance to the familiar chicken egg. With a shell more than 10 times thicker [...] it takes some serious work to crack an ostrich egg. [...] Using a cordless power drill, make a ½-inch hole in the bottom of the shell [...] Although the typical ostrich egg is equivalent in volume to 24 chicken eggs, it is not a straightforward substitute in recipes where a large number of eggs are required. Not only does an ostrich egg take some two hours to hard boil [...]