title: The "soil" of Mars (viking 1).
abstract: The location of the Viking 1 lander is most ideal for the study of soil properties because it has one footpad in soft material and one on hard material. As each soil sample was acquired, information on soil properties was obtained. Although analysis is still under way, early results on bulk density, particle size, angle of internal friction, cohesion, adhesion, and penetration resistance of the soil of Mars are presented.
authors.forename: R W
authors.initials: RW
authors.lastname: Shorthill
authors.forename: H J
authors.initials: HJ
authors.lastname: Moore
authors.forename: R F
authors.initials: RF
authors.lastname: Scott
authors.forename: R E
authors.initials: RE
authors.lastname: Hutton
authors.forename: S
authors.initials: S
authors.lastname: Liebes
authors.forename: C R
authors.initials: CR
authors.lastname: Spitzer