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determining how the variOuS types ofl00ls were made and used by the prehistoric people. II IS also looking at the dillerent quarry sources Irom which raw materials were taken. Ceramic Analysis Each piece 01 pottery is examined tor information concerning the basic raw matenals trom which It was made. the manufacturing process. and the designs USed in decoration. One specialist is also investigating the purpose lor whiCh each style of pot was used. r-- ~~ -~ people. The nutritional balance of the prehistoric diet can also be explored. Botanical Analysis Plant remams recovered in the ex. cavations yield information concerning food. building materials, and weaving materials. The scientists are examining preparation and use 01 plant resources to develop a picture 01 how the Anasazi people exploited their environment. The University 01 Colorado is also con- ducting experiments in prehistoric farming techniques. In the laboratory each piece of material is closely examined. and a description is entered into a computer file. Using the computer, archaeologists will deter- mine where dlllerent pieces or dillerent types 01 tools were found at a site_ Finally, the information will form a picture of the prehistoric society in the Dolores River Valley. ~ =~ -- - " ~I" As the NatIOn's pnnclpal conser. vallon agency. the Department of the Interior has respon- SIbility lor mOSl of our nal.onally owned pubhcJands and nalural resources ill '1OH.or<:"'" ,_as lOOm a'.......s_s.t ,,",CPnM Po.el>Io..lwgeAnau:>.'''_'nlne'.-..... GPO 1980~nl82. ThIS meludes losler. Ing the wlsesl use 01 our land and water reSOlJrees. prOtect,ng our IISh and wildlife. pre. servIng the environ. menIal and cullural values 01 our na. llonal parlo;s and h,stoncal places, and prov.dmg lor !I'Ie enjoyment 01 hfe lhrQ1,Jgh outdoor recreatIon The Departmenl as- sesses our energy and mmeral re- sources and worKS to assure that Ihel' development 's m lhe best mlerests of all our people The Department also has a major re sponS,blhty lOf Amencan IndIan reservalloneom. munltles and for people whO live in Island Temt01les under U.S. admin.. Slrahon.