Chapter 9

 

EARTHWORKING
AND EARTH RESOURCES

Moving pi uie emi-i hnnga Ml’ml and {em
Men ieelwu Whal ii did and menni
aui uepidaiion oi me epneree
muuyi genie: {an is Innocent
Uplin annel

And did me euiui move roi you?

91
INTRODUCTION

Few pajpk |oday inuek amuiid m eanli, and whm an
inieinaiional Him, I uiien llnd I have inc unly
deeenily diny lineeniaile

Fur ine soil seiemiei, soll has endless ciasaiiieaiiuna,
(o engineers, ii is d maienaii lo peiiieis, ineir basu
iesuuiee; and lo nausekeepeis, lmlpnnls on ilie llodi,
in pan uf ilie eienial dim However we look npun
euein, we will all ieiuin in ii. and lieip eieaie ilie soils
our IMQSWIS nude, niined, ui (in-in pan ui ciiuiaie,
mam, znllmls, and soil aie iniinuiely canneaed.
and each will have inlluenees on the aim. ii 11 a gut
enuieci, like iliai oi waiei, and lhls enupiei will
muceuiiaie moieon in use in menial design iiian on
nus as a mowing medium

People, and pinei aiuinal species, have mined soils
and eaiili deposfls [or speciiic iaiiii ieeuuiees since
iiieii incepim, examples aie a iiul "ligation: lo 53“
“ch, and speeilie dushng sues in whlch eiiiii md
mammls ml) in bath! k: nd iiuinselyee ui parasites
reople have used ica miueiale Lubsldnn, enen,
chaicedunyl as lonls, and have ground iicm nxldrs iii
gnipliiies as pipinenie (oi inauy \housands ol yeais
Sells neii in Hull oxldzs nave lung been mixed wiin
amm meals m in ilie blHer iannins as insaluble I2m(
iannnies 1"blark” bieadsl, Dl’ lo Supply mie up

 

eieinenis ui KM diet

nieie aie sevenil clays iiiliie, niieliiie, kaolin, ienpui
and: ”red“ ciaysl iiaiiiiionully used by tribal and
modern peopla iu lbsmb poisuus (lidin Sullmml nip,
yams), id ieduie diai-iiipea and digesnvr upsets, iii |o
ielieve leelings ol nausea ikaulin day). Nth-ugh liiue
woik liai been cnmed on! on inis lncipi, we shm-ld
mid all uses when $pmh< (lays aie mused, and MM
iney aie combined wiin ipeeilic iood iii «duct or
eliminnie Poxscncus oi unpalmule minis lmm lddds
sdine eanhs my be emu! |o supply nace eiemeiiie, as
clay and clay—salt licks aie (ammonly vuiied by deer,
kangpipe, caiile, and anielope Farm—calm; [seeping/D
)5 a mdespl-ud and seemingly mlunl mil olciuldieii
and mini peuples As well as days, inc whilri
iiuneiaiaidi asn ul (Res is Widely used as a mod dip a|
campliies by Aush‘allan Abo nei kamg loud in
clay is pimieni Xhmughaul iiie wmld

Eanhworkmg loi agnculniie and monumenis has
eiiieied iiii ai leasi mm yeais. Mineml smelung,
poiieiiy, and peel pi cm) ininuig loi liiels ineieused iiie
scope of eaiiliwoike, iinci inu was quickly lolliiwed by
iiie deyelupmeni ul large mac ' eiy iuiendad iii
iemcve mi ainuunis ul pies and iueis ici modem
luduslry, which laiiili quickly lium I800 on, so iiui iiie
laii me years 0! our ekiiience has seen ine gienesi
dwelupmzm of eaflhworkmg and mining,

The (vmlel use at selfrmnsporting munines ieally
dalu iiuin iiie poskwar yells now and pni, lnlluwlng
ilie waniine developmenl ol iiacked iauks, eaiin
umps used iui aiiiield msmlmun, and large piieu.
inane iyies lei 1M; iype ui equipmeni wnile civil
engineers have |o some ekieni kepi pace wiili (has!
develppinenis, iieiiiiei ilie public at III-5e npi iiiiase in
anhiiecniial oi nsncuhuml fields have inily ieilued
ilie poieniiul ul caiiiiwoikinp iiiaeiiuies iii ilie mpdem
sense

mi pcwei iii move me eaun wiin mndein mirhines
Is now almnsl unliiniied, we can, it we wuii, mix new

 

127