The SciencesJune 1, 1993
The Great Well of China
More than 150 years ago the Chinese drilled one kilometer into the earth to extract brine for making salt. The well was the culmination of an 800-year-old technology
Stories by Hans Ulrich Vogel
The Great Well of China
More than 150 years ago the Chinese drilled one kilometer into the earth to extract brine for making salt. The well was the culmination of an 800-year-old technology