i am taking mining in NITK but i am confused whethter getting a job in coal india will reduce my oppurtunity to get a mining job in gold min

bcoz preferably i want to go to Saudi or Australia for mining job bcoz of less payment in india !!!!!!!!!!!!!! and since coal and gold are extremely different metals they would reduce my job opportunity due to lack of experience in that metal field !!!!! plsssssssss help