Chemical Technology April 2015

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Chemical Technology • April 2015 36
Complete the grid
so that every row
across, every column
down and every 3x3
box is filled with the
numbers 1 to 9.
That’s all there is to
it! No mathematics
are involved. The grid
has numbers, but
nothing has to add up
to anything else. You
solve the puzzle with
reasoning and logic.
For an introduction to
Sudoku see http://
en.wikipedia.org/
wiki/Sudoku
Solution
for SUDOKU
103
SUDOKU NO. 104
Chemical Technology is the only publication in Africa for chemical
engineers focusing on all unit operations in a comprehensive way
► ► ► ► ► ► ► ► ► ►
etc
Age of ‘Little Foot’ provides twist in story of hominid evolution
An early hominid named Little Foot has
been dated to 3,67 million years old, mak-
ing the timeline of human evolution even
more complicated. Little Foot was
at Sterkfontein in South Africa, an
hour’s drive from Johannesburg in 1980,
and identified as hominid in 1994. Accord-
ing to co-author Ronald Clarke, a professor
at the Evolutionary Studies Institute at the
University of Witwatersrand and Little Foot’s
discoverer, the name came from a play on
the mythical Big Foot, and because four foot
bones were discovered first. For more infor-
Reprinted with permission of the PNAS
SAIChE IChemE Gauteng Branch
The Gauteng Branch Committee has the
pleasure of inviting you and your spouse to
our Annual General Meeting.
Save the date: 29 May 2015
Time: 18:45 for 19:15
Place: TBC
Nominations are needed for the Gauteng
Branch Committee. Please take note of
the following part of item 8.1 of the Rules
of Conduct of the Gauteng Branch: “...
members shall serve for two years with
retirement of half the members each year.
Retiring members of the committee shall
be eligible for re-election.” The nomina-
tion form can be found via the SAIChE
IChemE website
or contact us for more information saiche@
mweb.co.za
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Fundamentals of Process Safety Man-
agement – May
The course has been accredited by ECSA
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Date From: 25 May 2015
Date To: 29 May 2015
Location: South Africa
Description:An intensive course covering
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Contact Phone: +27 (0)82 554 0010
Contact Email:
Fees: R13 000
Early bird discount: 5% if payment is received
before 17 April 2015
Layer of Protection Analysis (LOPA) -
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Date From: 19 October 2015
Date To: 20 October 2015
Location: South Africa
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Event Type:IChemE Course
Venue: Boksburg, South Africa
Organiser:IChemE
Contact Name: Rod Prior
Contact Phone: +27 (0)82 554 0010
Contact Email:
Fees: R5 500
SAIChE IChemE contact details
PO Box 2125, NORTH RIDING, 2162
tel: +27 11 704 5915;
fax: (0) 86 672 9430;
email: ;
website: www saiche.co.za