In 1750, the iron industry was beginning in the area around the Franklin Pond.  This area became known as Franklin Furnace and was a part of Hardyston Township.  The iron industry brought many immigrants to work in the iron mines.  Dr. Samuel Fowler owned much of land in the area.  In the 1800's, zinc ore was found and Dr. Fowler sold his mining lands to a company which later became know as the N.J. Zinc Company.  The beginning of zinc mining brought an influx. of immigrants and families to the area.
 

In the early 1900's, the village of Franklin Furnace had grown and spread from the pond area to the Main Street area.  Since Hardyston Township was mostly rural and agricultural and the village of Franklin Furnace had discovered the wealth of the minerals in their community, application was made to the N.J. Legislature for the passage of an act to separate from the township of Hardyston.  Upon passage of the bill on March 18, 1913, and ratification by the citizens of Franklin in a special election on May 15, 1913, the Borough of Franklin officially came into being, with the selection of David W. McCarthy as it's first Mayor. (Act of Incorporation)

The community of Franklin Borough grew and prospered, especially under the direction of the first Superintendent of Mines of the New Jersey Zinc Company, Mr. Robert Catlin.  Mr. Catlin had received his work experience with the engineer, Herbert Hoover, who later became our 31st President.  Mr. Catlin first conducted shale oil experiments in Franklin in the early 1920's and directed the construction of the Palmer Shaft in order to extract the valuable zinc ores in the area.  Joseph Quinn recalls that, as a young child, he remembers his father being told by Mr. Catlin that the Zinc Company had selected the site of the family hotel for the location of the shaft, and that they would have to build another dwelling across the street.  When the Palmer Shaft was constructed, all the village wells went dry.  Mr. Catlin then built a new water system and supplied free water for the residents until 1931, after which the system was sold to the Borough.  Electricity was also provided to the families in the Borough by the N.J. Zinc Company, two months of which were provided at no cost to the users.

The Superintendent's concern for the safety of the miners led to the construction of the first hospital in the county in 1908.  Before its construction, injured miners were transported by train to either Paterson or Morristown, many dying before they arrived at their destination for treatment.

The first vocational school was built in Franklin under Mr. Catlin's direction. A Borough representative was sent to Gary, Indiana, to investigate its school system, and in 1915 a similar school was built to educate the children of the immigrant miners.  The building is still in use as the Franklin Elementary School.

A building program to house the workers was first instituted in 1912, with the construction of two double houses on Fowler Street in the Borough.  As the Borough grew, the N.J. Zinc Company, under the direction of Robert Catlin, continued to build homes for its employees, offering favorable terms for purchase of the homes.

The first mounted police officer in Franklin Borough was Herbert C. Irons, who was recruited from the Pennsylvania constabulary by Mayor Elwood Shuster.  As chief of Police, Herbert Irons became a legend in the law enforcement community in the County until his retirement.

To contact the local police in the borough, the following procedure was used.  If one needed police for any reason, they would dial 2201 (if a phone was available).  Otherwise they would go to the New Jersey Zinc Company time office on Main Street, and inform the clerk that a policeman was needed.  The time clerk would then turn on a switch, which would in turn activate a series of lights in various sections of the Borough to alert the police to duty.  This method was used 24 hours a day, 7 days a week.  In case of extreme emergency, the time clerk would quickly flash lights off and on to indicate an emergency warning.

The organization of the Franklin Fire Department in 1916, encouraged by Superintendent Robert Catlin, began with the purchase of an American LaFrance fire truck in 1916.  Prior to that time, all equipment consisted of hose carts that were pulled by hand.

The New Jersey Zinc Company General Store boasted "the best meats obtainable and all kinds of vegetables in season, with prompt delivery by motor truck service, and courteous treatment to all patrons".  It was located in the town center and supplied all the needs of the mining families.

The Franklin Neighborhood House, affectionately known as "the Nabe", was built in the mid 1800's.  Among its many uses were the first general store, housed the kindergarten classes, and in later years became the center of activity for all the recreational needs of a growing community.  during its heyday, it housed a library, two bowling alleys, meeting rooms for various civic organization, pool and ping pong table, facilities for dances, and living quarters on the second floor for the director, who was employed by the New Jersey Zinc Company to supervise the existing recreational programs.  It functioned as a community center until 1994, until the building was razed, much to the regret of the residents of the community.

The Franklin Theatre was erected in 1914, during the term of Woodrow Wilson, and was said to be one of the most beautiful buildings between New York and Pittsburgh.  A souvenir program records the Whitney Opera company in its presentation of "The Chocolate Soldier" on Tuesday evening, February 3, 1914.  Motion pictures were shown each weekday evening with a 10 cent admission, and "high class vaudeville" on Saturday night commanded a "small increase" in ticket prices.

The New Jersey Zinc Company was the largest employer in Sussex County and paid one third of property taxes in Sussex County, providing steady employment for many people.  According to the late John Naisby, Franklin in the 1930's was virtually untouched by the depression, providing a four day work week for the N.J. Zinc Company employees.  For all of these reasons, the Borough of Franklin was designated as the "Model Mining Town of the East", and the Fluorescent Mineral Capital of the World.