One division mines and refines sand used in high-tech oil drilling. The other division makes (specialty refining) and distributes gasoline and idesel fuel. But the first division is the biggest - which to restate, mines and refines specialty sand for the oil & gas industry. Both divisions are energy-focused and in their own way, "refine" a base product and then distribute it. The three attached logos are the logos of the current three divisions - the three divisions will be merged into this new company.
There is no need to incorporate any of the "old" logos that are attached, that are the logos of the three "children" firms but it would be nice. However, they are all three quite different. Really looking for a new logo that covers all three that conveys a very strong, technologically competent fuel and drilling supply and service provider. The name is kind of long, so use of the three letters is probably a better way to go, but I could be wrong. Have fun.