Final answer:
Ironworkers do work primarily with iron and steel and are correctly referred to as structural ironworkers. High-voltage wires are not insulated but held in place by insulating connectors. Francis Cabot Lowell indeed built the first integrated textile mill in New England, and early Methodists were called that because of their methodical approach to worship.
Step-by-step explanation:
Ironworkers primarily work with both iron and steel, and they are involved in constructing and erecting the structural framework of buildings, bridges, and other edifices, which includes assembling and installing the steel girders, columns, and other components that make up the skeletons of such structures. Therefore, the statement that ironworkers primarily work with iron and are often referred to as structural ironworkers is true.
Addressing the statement about high-voltage wires, it is false that these wires are wrapped in an insulating material. High-voltage wires, like those connected to tall metal-frame towers, are typically bare and not insulated. They are held aloft by insulating connectors to prevent the electric current from grounding.
In the historical context, the statement that Francis Cabot Lowell built the first integrated textile mill in New England is true. His mill, established around 1813, integrated all stages of textile production under one roof, which was a significant development in the industrialization of the textile industry in America.
Regarding the origins of Methodists, the term indeed comes from the methodical way they approached worship and religious observance, so the statement is true. The early Methodists, followers of John Wesley, were known for their systematic approach to religious life and worship, which is how they came to acquire their name.
Speaking about materials, cast iron is a type of iron that has been mentioned, while various types of iron and steel result from the steel-making process. The types of steel produced and their properties vary based on the method used in their production, the chemical composition, and the temperatures applied during the process.