The LAS data in this directory has been compressed using LASzip software. 
LASzip is an open source lossless compression for lidar point cloud data 
in the LAS format that provides significant file size reductions, helpful 
when downloading or storing large datasets.  To uncompress the .laz 
files you can use the laszip.exe tool in this directory or you can 
download the latest version from the link below.

http://www.cs.unc.edu/~isenburg/lastools/

See the laszip_README.txt in this directory to learn how to use the tool
in the command line.  Alternitably, in Windows Explorer you can also
'drag and drop' indiviual or muliple .laz files onto laszip.exe.  This 
will automatically uncompress the files into the current directory.