COLLECTED BY
Organization: Internet Archive
The Internet Archive discovers and captures web pages through many different web crawls. At any given time several distinct crawls are running, some for months, and some every day or longer. View the web archive through the Wayback Machine.
Collection: Hackernews crawl number 0
Hacker News Crawl of their links.
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20160702053035/http://minerals.usgs.gov/minerals/pubs/commodity/zinc/mcs-2015-zinc.pdf