The  Redhills,  Ltd.,  a  non-producing   com-
pany  under   Messrs.   Osborne   and  Chappel's
management,  should  be  adding  to  Perak  out-
puts in   a   month   or  so.     This    concern    was
recently  floated  with  the  reasonable  capital  of
£40,000   and  holds   a   large   body   of  gravelly
alluvial,  adjoining  Fusing  Lama.     It  is  being
equipped  on  highly  economical  lines,  with  a
view  to  the  saving  of  labour  and  effecting  a
high  extraction,  well  in  advance  of  the  Perak
standards.     For   the   shifting  of  the    ground'
which  contains  from  10  to   15  per  cent  of  tin-
bearing  rockfragments  requiring  pulverization,
a  steam  navvy  and  a  blondin  conveyor  have
been  installed.     By  the  agency  of  these,  the
dirt  is  dumped  on  an  elevated  place  above  the
treatment    plant,     where    it    is    further    dis-
integrated  by   monitors   before    passing    into
longitudinal   puddlers,   below    which    are    an
inch  and  a  half-inch  trommels.     The  classified
rock   is  delivered  into   the  25    (850  Ibs)  stamp
battery,  whose  pulp  is  concentrated  on  wilfley
and  bus  tables.     For  the  trommel  sludge  there
will  be  200  feet  of  riffle  boxes,  3  ft.  9  in.  wide,
and  graded  at  I  in  20.     A  magnetic  separator


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will  be  installed,  as  at  Fusing  Lama.  It  is
estimated  that  4  per  cent,  will  be  won  from
the  crushed  product,  at  a  cost  of  2  per  cent.
Taking  the  proposition  generally,  an  average
yield  of  $2.50  per  yard  should  be  recorded,  or
about  1,000  piculs  per  month.  An  extension
of  mill  may  be  found  advisable  at  later  date,
but  this  largely  depends  on  the  proportion  of
milling  ore  met  with  in  actual  working  practice.
Some  consider  that  the  25  head  battery  will  be
unable  to  cope  with  the  rock  found,  on  the  sug-
gested basis  of  1,000  tons  of  ground  perdiem.
Suction  Dredging.
