Image overlay in Litchi

Hi, I have a job to do in a mine and as mines are constantly changing landscapes and shuffling earth mountains around it is not enough for me to use Google Earth satellite images. I would need to import an updated satellite image of the region into Litchi instead.
The mine is constantly doing this type of surveys and they can send me this data, however what format should I ask them to send me and how can I import and overlay this image on top of Google Earth satellite image within Litchi app?