Apollo Lunar Surfce Drill bore stem design

Abstract

Martin Marietta Corporation has submitted the Bore Stem Structural Analysis Report (enclosure 1) for NASA's review and approval. Since redesigning the bore stem joint was your recommendation, we are requesting your office support us in the review and approval of this design. We would also like your concurrence prior to approval of this analysis report.... The Bore Stem Test Report (enclosure 2) is submitted for your information, since your office supported these tests at Martin Marietta.