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

MAGNET - BOOM-BOOM P.S.
Start: 14-May-2008
End: 16-Sep-2019
Blewitt, Geoff, Hammond, William C., Kreemer, Corne, 2010, MAGNET - BOOM-BOOM P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5KW5D6M