NASA NTRS · 19690000477
Iris-leaf core retainer for a surface drill
Abstract
Iris-leaf core retainer insures retention of a complete sample within the drill string. Individual overlapping leaves will not rupture or tear out when they come in contact with the oncoming core.
Keep this discovery
Explore connections, maps & timelines
Olivari, H.. 1969-09-01. Iris-leaf core retainer for a surface drill. https://ntrs.nasa.gov/citations/19690000477
Cite the original work for its findings. Save a collection to share your selection of sources.