Leadership Overview
JENNMAR has 5 executives leading key functions including strategy, operations, finance, and market development.
Driven by a commitment to safety and performance, JENNMAR provides engineered ground control solutions for mining, tunneling, and civil construction, enhancing operational efficiency and stability worldwide.
Driven by a commitment to safety and performance, JENNMAR provides engineered ground control solutions for mining, tunneling, and civil construction, enhancing operational efficiency and stability worldwide.
Leadership Roles at JENNMAR
David Webster - Chief Executive Officer
David Webster, the Chief Executive Officer at JENNMAR, directs the company's overarching strategy and global operations. Webster guides JENNMAR's expansion in demanding industries like mining, tunneling, and civil construction, ensuring the delivery of specialized ground control products and engineered support systems. This leadership role involves fostering innovation in resin products and custom fabrication to meet the unique safety and performance requirements of challenging environments. Webster's strategic vision propels the company's integrated approach, leveraging a network of affiliates to serve infrastructure markets across the globe. The Chief Executive Officer ensures that JENNMAR's offerings consistently improve operational efficiency and stability for underground and aboveground construction applications. David Webster's executive oversight is critical to maintaining JENNMAR's position as a family-owned leader in manufacturing and engineering solutions.
Tim Maziarz - Chief Financial Officer
Tim Maziarz, the Chief Financial Officer at JENNMAR, manages the company's financial strategy and fiscal operations. Maziarz oversees all financial planning, budgeting, and reporting, ensuring the fiscal health and stability of the family-owned manufacturing and engineering enterprise. This executive guides investment decisions related to ground control products, steel structures, and resin technologies, supporting JENNMAR's growth in mining, tunneling, and civil construction markets. The Chief Financial Officer plays a crucial role in managing the financial aspects of custom fabrication and complementary services, ensuring profitability and resource allocation. Tim Maziarz's financial acumen supports JENNMAR's global reach and its ability to deliver reliable products that enhance operational efficiency and stability. Maziarz's leadership ensures robust financial management across all of JENNMAR's integrated operations and affiliate networks.
Michael Portwood - Chief Operating Officer
Michael Portwood, the Chief Operating Officer at JENNMAR, oversees the company's extensive manufacturing and engineering operations. Portwood manages the production and delivery of ground control products, including engineered support systems, steel structures, and resin products, ensuring adherence to stringent safety and performance standards. This executive is responsible for optimizing the supply chain and operational efficiency across JENNMAR's global network of affiliates. The Chief Operating Officer drives the implementation of custom fabrication projects, tailoring solutions for the mining, tunneling, and civil construction sectors. Portwood's focus on field application and technical expertise supports clients from initial consultation through project completion. Michael Portwood's operational leadership ensures the reliable performance and stability of JENNMAR's products in challenging environments worldwide, directly impacting the company's ability to serve diverse infrastructure markets.
Brian Delloma - President
Brian Delloma, the President at JENNMAR, drives strategic initiatives and market expansion for the company's ground control products and solutions. Delloma leads efforts to enhance safety and performance in demanding industries such as mining, tunneling, and civil construction, overseeing the development and deployment of engineered support systems and custom fabrication. This executive focuses on strengthening JENNMAR's integrated approach and its network of affiliates to serve infrastructure markets globally. The President is instrumental in ensuring that JENNMAR's offerings, including steel structures and resin products, meet the highest standards of quality and reliability. Brian Delloma's leadership ensures that the company's technical expertise and complementary services effectively support project needs from consultation through field application, contributing to improved operational efficiency and stability.
Tony Calandra - Group President
Tony Calandra, the Group President at JENNMAR, directs significant operational segments and market strategies for the company's diverse product lines. Calandra oversees the group's performance in delivering specialized ground control products and engineered solutions tailored for the mining, tunneling, and civil construction sectors. This leadership role involves driving innovation in steel structures, resin products, and custom fabrication to address complex safety and performance challenges. The Group President ensures the effective integration of JENNMAR's manufacturing capabilities and technical expertise across various affiliates and project sites. Tony Calandra's focus on enhancing operational efficiency and stability supports JENNMAR's global infrastructure market presence, ensuring reliable product delivery and comprehensive field application support.
Explore Leadership Teams in Building Materials
Shyam Metalics is a prominent integrated steel manufacturing company based in West Bengal, India, specializing in TMT bars, steel, wire rods, and other structural steel products. With advanced production capabilities and a combined capacity of 15.13 MTPA, they serve a wide range of clients across India, including those in the southern, western, northern, and eastern regions. The company is also recognized as one of the largest producers of ferro alloys and plays a significant role in the aluminum foil export market. Committed to sustainability and innovation, Shyam Metalics aims to set industry benchmarks through cost-efficiency and effective resource utilization.
Company Leadership AJ
MD
MG
Carpenter Technology Corporation is a leading manufacturer and distributor of specialty alloys and advanced materials, serving critical industries worldwide. Headquartered in Philadelphia, Pennsylvania, the company produces high-performance specialty metals including stainless steels, titanium alloys, nickel-based alloys, and other advanced materials used in demanding applications across aerospace and defense, medical, energy, transportation, and industrial markets. Carpenter Technology operates through an integrated network of manufacturing facilities, distribution centers, and service locations globally, providing custom alloy development, precision manufacturing, and technical support services. The company's product portfolio includes premium alloys, powder metals, and engineered solutions designed to meet stringent performance requirements for extreme temperatures, corrosive environments, and high-stress applications. As a publicly traded company (NYSE: CRS) with over a century of metallurgical expertise, Carpenter Technology serves original equipment manufacturers, service centers, and end-users requiring specialized material solutions for mission-critical components and applications.
Company Leadership BB
CP
PD
PM
Concrete Supply Co was founded in 1958 and is headquartered in Charlotte, North Carolina, and provides ready mix concrete and related services.
Company Leadership JJ
MB
HB
Founded in 1919, Birla Corporation Limited is a cement and jute manufacturer and distributor headquartered in West Bengal, India.
Company Leadership SG
AM
AS
Frequently Asked Questions Regarding JENNMAR Top Executives and Leadership Team
