As my choices for my diploma thesis have boiled down to diving into the world of shallow-marine limestones (again) used for making burnt lime with a large German manufacturer of construction materials I am wondering how many geos and perhaps mining engineers we have in the geoblogosphere who can share some experiences. Mining for metal ores and precious stones has a much wider exposure than the industrial minerals, however, in Germany, if you want to work on mineral deposits (in the wider sense) industrial minerals and aggregate will be your first choice right after coal or salt.
I've been wondering. Please excuse the very vague questioning. What are the pros and cons in your opinion and what do you think about the career aspects in these fields of mineral production? I am still pondering to also persue a PhD sometime after my graduation. What affect will my focus on limestones (by necessity) have on the chances of persuing a PhD related to metalic ore deposits?
Any shared experiences are highly welcome!