At the age of 19 Laurence Silvi Senior, better know as “Larry”, joins the US Navy and is deployed overseas for WWII
Laurence J Silvi Senior returns home from WWII to work in the Silvi family general store located in Tullytown, PA as a butcher.
A Customer gives Larry’s father a block plant to pay off debt incurred at the Silvi family general store. Larry Sr. is instructed by his father to “start making block” at night after his duties as a butcher were over during the day.
Larry Sr. marries Rose Marrazzo, moves into a farmhouse in Morrisville, PA and rents the upstairs apartment to a purchasing agent from William J. Levitt & Sons. William J. Levitt starts building a 16,000 homes project to be called Levittown, PA.
Levitt’s purchasing agent convinces LJS Sr. to start a sand washing operation on his farmland to supply Levittown project.
Levitt convinces LJS Sr. to start a ready mix concrete business to supply the last 40 homes in Levittown, PA. Levitt and Sons loans a concrete truck to Larry, and Larry creates Silvi Concrete.
Silvi buys two 6 yard “pony motor” mixer trucks from local dealer who said “make the first payment after 1 year if you can. If you can’t return the trucks and you don’t owe us anything.”
Levitt awards contract to Silvi to be the sole supplier for 16,000 home project in Willingboro NJ
Levitt awards contract to Silvi to supply 5,000 homes for project in Matawan, New Jersey.
Silvi purchases property for a sand and concrete plant in Franklinville, NJ to supply Levitt in a project in Williamstown, New Jersey.
Silvi opens Silvi Concrete of Englishtown in Millstone, NJ.
John L. Silvi graduates from Syracuse University, joins company.
Laurence J. Silvi, II from Syracuse University, joins company.
Silvi Concrete moves its original concrete plant from Larry Senior’s backyard to its current headquarters at 355 Newbold Rd in Fairless Hills, Pennsylvania.
Silvi purchases Richcrete Concrete adding plants in Trenton and Cranbury, New Jersey
Silvi purchases a 220 acre sand mining operation in Monroe Township, Glouster County, New Jersey from Southern Sand Company, starts Sahara Sand Division.
Silvi purchases a 68 acre property on the Delaware River from Paterson Parchment Paper Company known as Riverside Industrial Complex. Riverside Construction Materials division is created and it erects the 1st steel silo to create a cement import terminal in Bristol, PA.
Riverside Construction Materials imports its first bulk cement ship from Greece.
Silvi Concrete acquires Glerium Concrete Company located in Brick Township, NJ.
Sahara Sand buys 204 acres of property in Franklin Township, Glouster County, New Jersey and opens a greenfield sand and gravel plant.
Silvi Concrete buys its first front discharge concrete trucks and changes the delivery standard in Pennsylvania and New Jersey.
Silvi buys Transfleet Concrete – Collegeville, PA and closes its operations.
Silvi celebrates 50 years of business.
Silvi opens Greenfield Concrete Plant in Limerick, PA.
Sahara Sand buys 1,000 acre sand mining site in Eagleswood Township, New Jersey from RW Vogel Inc.
Riverside Construction Materials imports its first bulk cement shipload from Siam Cement in Thailand. Riverside is the first company in US history to import cement from Asia.
Sahara Sand buys 207 Acres of Monroe New Jersey from the Morrie Companies for sand plant.
Silvi Concrete buys plant in Oxford, PA from Bowman Concrete.
Silvi buys 300 acres in New Hanover Township, PA for hard rock quarry. Gibraltar Rock stone mining division is created within the Silvi Group Companies.
Riverside Construction Materials buys a state of the art VanAalst pneumatic cement unloader from the Netherlands for the unloading of cement ships.
Silvi Concrete buys concrete assets from Independence Concrete Company and opens concrete plant in Downingtown, PA.
Gibraltar Rock buys 1,400 acre quarry from 3M Corp in Belle Mead, New Jersey.
Silvi Concrete buys American Concrete Plant, South Plainfield, New Jersey.
Silvi Concrete buys 3 concrete plants and 1 block plant from Phillips Concrete. The locations are in Hillsborough, New Brunswick, Harrison and Clinton, New Jersey. The Phillips corporation had been in business since 1895.
Silvi Concrete Purchases the 1st 30 CNG 12 liter front discharge concrete trucks in the world from McNeilus Corp.
Silvi Concrete purchases three central mix concrete manufacturing facilities from RE Pierson Materials. The plants are located in Lumberton, Winslow, and Logan Township in New Jersey. This acquisition expands Silvi’s market place from Newark, NJ to Wilmington, Delaware and the five county Philadelphia area west to Lancaster, PA.
Gibraltar Rock recently bought three Caterpillar 777 quarry haul trucks. Each truck is capable of holding 105 tons of raw material delivered to the primary crusher.
In July, Riverside Construction Materials completes construction and filling of the new 65,000 metric ton dome in Bristol, PA. Phase 1 of the new dome was completed in November 2015. The facility consists of (2) 65,000 metric ton domes and (1) 35,000 metric ton dome.
Silvi Concrete pours 5,868 yard record concrete pour in Philadelphia, PA for The W Hotel. It is the largest concrete structure in Philadelphia history. Mat Foundation utilized 25.2 million lbs of concrete delivered in 28 hours requiring 136 trucks from 4 central mix concrete plants.
On December 12, 2017 Riverside Construction Materials bought the assets of Summit Salt. Summit Salt sells bulk Rock Salt and calcium chloride used for deicing. Salt and calcium is available for pickup and delivery from RCM at their Bristol, PA deep water terminal.
Gibraltar Rock and Sahara Sand supplied 185,000 tons of sand and stone to Walsh Construction for an onsite concrete plant for concrete runway #3 at JFK Airport . The material was delivered using up to 170 dump trucks per night during a three and half month period.