And then there are the M-Disk: http://www.extremetech.com/computing/92286-m-disc-is-a-dvd-made-out-of-stone-that-lasts-1000-years. USD DOD test: http://www.mdisc.com/uploads/M-DISC_1sheet_ChinaLake_vF.pdf. Down side, requires writer that is M-Disk capabale, and disk are expensive (ie about 3 bucks per disk.
The Shaanxi earthquake's epicenter was in the Wei River Valley in Shaanxi Province, near the cities of Huaxian, Weinan and Huayin.
Transcript of Tangshan Earthquake, 1976. Tangshan earthquake, 1976 By Aisling McKenna What happened Why it happened Where it happened Social Impacts Affected area Economic Impacts At 3:42am on the 29th of July, 1976, Tangshan was hit with an earthquake clocking in between 7.8 and 8.3 on the Richter scale.ranscript of Tangshan Earthquake, 1976. Tangshan earthquake, 1976 By Aisling McKenna What happened Why it happened Where it happened Social Impacts Affected area Economic Impacts At 3:42am on the 29th of July, 1976, Tangshan was hit with an earthquake clocking in between 7.8 and 8.3 on the Richter scale.