Tight calf muscles may be caused by a compartment syndrome. This is where the muscle becomes too big for the sheath surrounding the muscle causing pressure, sometimes pain and restricted movement. Biomechanical problems of the foot or from running style can increase the strain on the calf muscles.
Two judicial courthouses are located in Jefferson County, a situation dating to when the state legislature was preparing to split off a portion of Jefferson County to create a new county, centered around Bessemer.
The Bessemer process was the first inexpensive industrial process for the mass-production of steel from molten pig iron prior to the open hearth furnace. The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron.