Mining is our craft and our passion.
In the early days of quarrying, explosive placement was not done scientifically, although attempts were made to minimize cost and maximize output. High explosives were detonated instantaneously, causing ground vibration and “airblast” often felt by the whole neighboring community.
Today, instead of instantaneous detonation, explosives in each drill hole are initiated in a predetermined sequence so that there are delays of a few milliseconds between each activation. The shock waves generated direct much more energy into breaking the stone effectively (making the blast more economical) and less into air and ground vibration (making blasting less alarming for our neighbors).
Blasters create a detailed record of each blast, including the results of seismographic monitoring, and we maintain those blast records for years. The most important use of the records is to continually make blasting outcomes more predictable.
We work with, appreciate and learn from all people. New blasting research and techniques are coming out constantly. We attend industry conferences several times a year to learn about improving blast results from the experts. We love trying new approaches and are constantly experimenting to see if other methods used around the world may improve blasting outcomes for our miners and neighbors.
We appreciate feedback from our neighbors because we need more information about blast performance to continue improving our program. Blasters can often optimize the layout and timing of a blast to manage the impact that’s perceived by the community around the quarry, so every bit of feedback helps.