Current underground surveying requires workers who are trained and experienced in their field. Surveying a newly blasted round can take time, as surveyors are required to go underground and perform a tope (topographic survey) of the round to determine as built conditions vs the original design. In additions to this, current underground surveying requires time to install grade plugs in the wall and smoke marks in the back to mark line and grade. This process is done by the surveyors at planned distances and intervals. Following the set up of these grade plugs and smoke marks, the miner is required to mark up the round factoring grade, centerline and the crank line prior to a new round being blasted. It can take a miner anywhere from forty-five minutes to an hour depending on their experience and field conditions, thus delaying the cycle time.


Miners currently need to wait for surveyors to set up new line and grade spads. This can take anywhere from 1 day to 2 weeks, depending on how busy the surveyors are. During this time, development will either stop or it will continue with improper drift control. If it continues with incorrect line and grade, the drift will most likely end up deviating to an incorrect location as the miner will use out dated spads or follow one of his walls.






MOSS is a very user-friendly software system, which results in tasks such as face mark up being able to be done by one operator. Traditionally, surveyors are required to go underground and complete a survey of the freshly blasted round, this process can impede on the overall cycle time. With MOSS, the miner can do all the survey work previously only done by surveyors. This major advantage can greatly decrease the time required to cycle a round. The surveyor is alleviated from performing layout and pickup tasks and has more time to focus on quality assurance of the control points being used for production drilling and blasting.


Each time the MOSS process is completed, the mine plans are updated, this results in newly updated plans every day. When a miner uses MOSS to mark up the face, he or she brings the tablet to surface or an underground sync station at the end of their shift and syncs the new data. Updated drawings are instantly accessible on the network for Surveyors, Engineers and Geologists to review and determine if there are any discrepancies.


Below is a list of information that surface workers can see:

• Overbreak

• Underbreak

• Deviation from mine design

• Topes

• Volumetric Data


MOSS can perform topes in any location. These topes can be completed by the miner during the process of marking up a new face, or by a survey crew who needs to tope an existing heading or drift.

Traditionally, topes are not performed with every new round being taken. With MOSS, it is possible for topes to be performed with every new round. This is a very important feature of MOSS as it makes year end much easier for the workers are they’re not scrambling underground at every face doing takeoffs.

Again, with all the other data collected with MOSS, the topes are updated on the network at the end of every shift.

The face can be marked up using MOSS to show where all the drill holes will be located. The total station will project a laser onto the face in the location of each drill hole, and will remain in each location for the desired amount of time chosen by the miner. If the miner misses marking up a hole with the paint can, he or she can go back five holes. After the hole markup is complete, MOSS will generate a visual hole mark up drawing onto the tablet, where the miner can see all the holes that have been marked up, and which haven’t.


By using MOSS to complete a face markup, there is a significant time savings associated with it compared to the traditional face markup method by using a measuring tape. MOSS will also create the most efficient drill hole layout specific to the size of the drift, and rock type



1 of the new features of MOSS is the software for the creation of the Long hole Drilling Templates