The following information obtained from UNAVCO's online DOI system:
(https://www.unavco.org/data/doi/search/search.html)

MAGNET - HARE-HARE P.S.
Start: 19-May-2007
End: 18-Jan-2012
Blewitt, Geoff, Hammond, William C., Kreemer, Corne, 2009, MAGNET - HARE-HARE P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5P8493C