deletions | additions       diff --git a/Introduction.md b/Introduction.md  index f86c11a..5c29e7c 100644  --- a/Introduction.md  +++ b/Introduction.md 
...
The first surface instruments were installed in 2012, in the month prior to the M 5.4 Moe earthquake (2012-06-19:10:56). Since then, the seismic array has grown, with extra stations built near Fish Creek, Willow Grove, Loch, expanding the effective size of the network.  In October 2014, 3 borhole borehole  instruments were deployed olong along  the Strzelecki hills, at depths of ~130 m. These instruments increase the spatial resolution of the Gipplsand array, and offer a chance to monitor microseismiciy that might otherwise go undetected.