As the head of the UREC system at the turn of the 20th century, he oversaw completion of the massive construction project of the Pratt Street Power Plant.

He was wounded seven times and suffered shattering injuries to his left arm which necessitated a lengthy healing process.

As befits its name, it was a most important transportation service for the western part of the "Old Line State" and surrounding areas in the Appalachian, Blue Ridge and Allegheny Mountains range.

At that time the company's infrastructure was significantly deteriorated from the combining of various smaller lines which had begun in the 1850s and only in the last decade had converted from horsecars pulling power to electric.

He managed a rebuilding of the system and its newly constructed Pratt Street Power Plant located on the south edge waterfront of the downtown area after the Great Baltimore Fire of February 1904.

[1]: 197 John Mifflin Hood died at his home in Baltimore on December 17, 1906, and was buried at Druid Ridge Cemetery.