The immense growth of human infrastructure — booming cities, roads, concrete, glass, electronics, and shale gas fracking — now requires such a massive extraction of sand and gravel.
4 Comments
The immense growth of human infrastructure — booming cities, roads, concrete, glass, electronics, and shale gas fracking — now requires such a massive extraction of sand and gravel.
Copy and paste this URL into your WordPress site to embed
Copy and paste this code into your site to embed