I could not agree more with John! A training company like mine will, in your particular situation, at best, guide you on the technical aspects of the 'how to' for designing a training module, delivering it, etc. However, the contents of any such module will have to, and should, come from an expert in the foundry industry.
Knowing the abysmally low safety record and levels of occupational health & safety in India, especially in mid-sized enterprises, I won't be surprised if John's suggestion is brushed aside. But, I am hoping that your company is different and really does care about its people.
And, Pooja, if any training company tells you that they'll help you with outsourced assistance, tie-ups, etc., almost 99.5 out of 100 will be lying to you. Your requirement is very specific, and your industry is very high-risk with abundant potential for real risk to human life at every step. Please make sure that whoever you choose to assist you is not just qualified but very experienced in your industry.
I can only help you in suggesting how to design a training model, etc. But, your real problem cannot be solved here. I seriously think you must approach your industry association or apex body. Surely they will have someone to help you!
Take care!