Picture credits

The stock pictures on this site come from Wikimedia Commons. They were cropped and resized for the web, and the gallery pictures were also shown in greyscale. Adapted versions are shared under the same licence as the original: the quartz picture (home page, small images and social preview) under CC BY-SA 2.5, the Keonjhar mine picture under CC BY-SA 4.0, the Bangalore quarry picture under CC BY-SA 3.0 and the port picture under CC BY-SA 4.0. The granite picture is credited as CC BY 2.0 requires.

Quartz, Tibet by JJ Harrison, CC BY-SA 2.5, via Wikimedia Commons.
One of the iron ore mines in Keonjhar district by Bikashkumargiri1997, CC BY-SA 4.0, via Wikimedia Commons.
Granite quarry Bangalore by Shyamal L., CC BY-SA 3.0, via Wikimedia Commons.
Tan Brown Granite (porphyritic granite, Archean; Andhra Pradesh State, southern India) by James St. John, CC BY 2.0, via Wikimedia Commons.
Krishnapatnam port cranes unloadng a ship by Rahmanuddin (రహ్మానుద్దీన్), CC BY-SA 4.0, via Wikimedia Commons.