Vol. 239, Issue 2, 1941February 01, 1941 EDT
The Physics of Upward Drilling
The Physics of Upward Drilling
F. W. Preston, J. C. Turnbull,
Preston, F. W., & Turnbull, J. C. (1941). The physics of upward drilling. American Journal of Science, 239(2), 92–105. https://doi.org/10.2475/ajs.239.2.92