Black Mesa resources' license

Hi.
I’ve asked the question in Black Mesa is released! thread, but you might have missed it in the large number of posts.

What is the license of Black Mesa resources? Can they be used freely elsewhere?

Thanks.

You might wanna PM cman2k 'bout that. Don’t get you hopes up high. Not all assets will be usable elsewhere.

Read the license.txt in your black mesa folder.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.