BEACH PROSPECTING PROJECT

PROGRESS REPORT

Jan 13 through March 13, 1964
by Erik Stephansen, OSESA

FIGURES
please click on pictures to enlarge !

BeachProspectingFIG1.jpg
FIG 1: 48 inch caisson supported by Michigan
front-end loader 		BeachProspectingFIG2.jpg
FIG 2: Caisson after jetting
down to
bedrock 		BeachProspectingFIG3.jpg

FIG 3: Close-up of caisson cutting head with carbide teeth just visible. Note airholes about one foot above water jet holes 		BeachProspectingFIG4.jpg

FIG 4: Detail of hose connection assembly on caisson.
Note hydraulic piston to left of man.
BeachProspectingFIG5.jpg
FIG 5: Mr. Stephansen enters caisson to inspect bedrock exposed at base. 		BeachProspectingFIG6.jpg

FIG 6: Mr. Stephansen at
base of caisson
as remaining water
is pumped out. 		BeachProspectingFIG7.jpg

FIG 7: Examination of gravel and cobbles (and boulders) removed from caisson 		BeachProspectingFIG8.jpg
FIG 8: Portable gravel-processing plant
BLO fecit 20031109

in memory of our good friend Erik Stephansen who
died in 2002