big buying

Just looked up the last 10 trades for lhg on Westpac.

Here they are: That's over $520K after the bell in just 5 trades, what's that all about?

Lihir Gold Limited (LHG)
Date Time Price ($) Quantity Value ($) Conditions
19-01-2004 04:33 PM $1.394 139713 $194,731.979 Portolio Special Crossing
19-01-2004 04:25 PM $1.370 123408 $169,068.960 Market Info,Crossed
19-01-2004 04:05 PM $1.370 50000 $68,500.000
19-01-2004 04:05 PM $1.370 36917 $50,576.290
19-01-2004 04:05 PM $1.370 27983 $38,336.710
19-01-2004 04:05 PM $1.370 21000 $28,770.000
19-01-2004 04:05 PM $1.370 7100 $9,727.000
19-01-2004 04:05 PM $1.370 5000 $6,850.000
19-01-2004 04:05 PM $1.370 3000 $4,110.000
19-01-2004 04:05 PM $1.370 1017 $1,393.290