'Gradual evolution' instead of 'big bang'  Otago Museum in
Dunedin. Photo by Peter McIntosh Otago Museum in Dunedin. Photo
by Peter McIntosh Otago Museum director Dr Ian Griffin has no
regrets about opting for ''gradual evolution'' rather than a
''big bang'' approach to the museum's redevelopment as the
museum's 150th anniversary draws near.   A proposal approved in
principle by a previous Otago Museum Trust Board would have
resulted in a major redevelopment, costing up to $30 million, to
mark the 150th anniversary in 2018.  It is understood this
redevelopment would have added two upper storeys to the main
museum complex.  Former Otago Museum Trust Board chairwoman
Margaret Collins said recently she was ''disappointed'' the
earlier-proposed large-scale redevelopment was not being pursued
at this stage.  But Dr Griffin said the somewhat less
spectacular evolutionary approach being proposed would still
inject about $15 million into the museum complex through several
phased redevelopment projects in the lead-up