It is an immense undertaking, one that would affect every corner of the $250 billion communications industry.

Creating a cross-referenced and consolidated shareholding register of every Tye-related company would be an immense undertaking.

Almost all the illustrations were his own work, an immense undertaking.

Sailing as chief engineer is an immense undertaking of great responsibility.

The project was an immense undertaking which occupied the artist for the next thirty years.

It is an immense undertaking, that much I can tell you.

"We are the stewards of this wall, and preserving it is an immense undertaking."

Switching to a single currency is an immense political undertaking.

"By any estimation, that is an immense undertaking, which will take not only good technology, but staying power," he said.

They and everything they stood for had to be swept away, but that was an immense undertaking that could not be accomplished overnight.