Technology consultation in the field of mining and geotechnical engineering; Design for others in the field of mining and geotechnical engineering, namely, mine waste impoundment design services; mine backfill design services; process design services; and system design and testing services(Based on 44(d) Priority Application) Technology consultation in the field of mining and geotechnical engineering; Design for others in the field of mining and geotechnical engineering, namely, mine waste im...