When it comes to synonyms for the phrase "steel dig", there are a few alternative terms that can be used. One such synonym is "steel excavation", which refers to the act of digging into the ground using steel tools or equipment. Another option is "steel mining", which is often used to describe the process of extracting minerals or resources from the earth using steel machinery. Additionally, "steel excavation" and "steel digging" can also be referred to as "steel trenching", emphasizing the creation of trenches or channels in the ground using steel tools. All these phrases convey the same meaning of utilizing steel equipment for digging or excavating purposes.