An official website of the United States government. Here's how you knowHere's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Latest Earthquake | Chat Share
XLSX format tables-only relase - Republic of Korea 2017-18 Minerals Yearbook. These tables are an advance data release of those to be incorporated in the USGS Minerals Yearbook 2017-18, v. III, International. The full report (text and tables) will be released when publication layout is complete.