Philip Anderson was born in Calumet, Michigan, and graduated from Dunwoody University in Minnesota as an auto mechanic specializing in auto electrics. He worked in several dealerships in Minnesota and finally opened his own transmission shop in Cokato, MN. He moved to Phoenix, Arizona, in the 1980s. He taught automatic transmission at AAI in Phoenix. Later, he relocated to the Grand Canyon to work as a lead mechanic for Fred Harvey, where he collaborated with Navajo mechanics to service Fred Harvey buses, company vehicles, and perform private vehicle repairs.
He grew frustrated by the lack of natural‑looking scenery products available at hobby shops. Drawing on his hands‑on mechanical background, he began traveling across northern Arizona, screening rock and gravel of varying sizes and hues from local pits. After showcasing his homemade ballast on a layout at the Great American Train Show in Phoenix—and fielding repeated questions about its source—Philip formally founded Arizona Rock & Mineral Co. From that moment, sales took off like gangbusters, driven by his commitment to supplying real‑rock ballast that not only mimics authentic trackside textures but also stays put during application.
Early Challenges
Arizona Rock & Mineral Co. initially aimed to operate within Grand Canyon National Park but quickly ran afoul of strict permitting and environmental regulations, forcing an early relocation to Paulden, Arizona. They built their house and their levies around AZRock, as Jane has handled the Business side and Philip handled the rest. Jane worked outside the home to support both the family and the business we grew. The burst of the 2001 tech bubble nearly sank the company.
We gradually expanded the customer base and the number of hobby shops to support the business. The 2008 financial crisis delivered another blow, as hobbyists tightened their budgets and discretionary spending on model railroading plummeted. We relied on hobby shops to spend the word and started online advertising on Facebook to grow the company slowly, so that we could handle the growth. We were blind side in 2020. During the COVID-19 pandemic, a surge in at-home hobbies led to a doubling of sales. This stressed the business, as it seems. It did not ease when restrictions were lifted, demonstrating the company’s ability to weather even the most turbulent economic storms.
Community
From day one, AZRock has engaged directly with hobbyist clubs and regional model‑railroad shows. Phil would spend hours on the phone with customers, walking them through tips and techniques for building layouts, crafting realistic scenery, and troubleshooting application challenges. Through these one-on-one conversations, along with his 600-square-foot layout, he educated newcomers on blending realism with practicality, fostering loyalty, and positioning the brand as an advocate and resource for the broader modeling community. He spent hours documenting this on our website to make it live on. This chapter of personal engagement eventually came to an end when his daughter, Carol Skoog, obtained a court order placing him in a nursing home; thereafter, he was never able to work on or play with model scenery again until his passing on June 21, 2025.
Leadership
Since 2005, Jane Anderson has served as CEO—succeeding Phil Anderson—and has guided the company toward expanded product lines and deeper hobbyist support. Her dual background in small-business management and model railroading informs a balanced strategy that combines growth with hands-on quality control. Phil worked alongside her; as a married couple, they nurture the business together. Although Jane never intended to helm AZRock, she upholds its mission out of a sense of responsibility to the modeling community and in honor of Philip’s lifelong passion for crafting model-railroad layouts.
Growth and Adaptation
Arizona Rock & Mineral Co. measures success by customer feedback and repeat orders rather than formal accolades. In 1995, Phil Anderson launched our first, makeshift website—ingeniously skirting technical restrictions of the era—to share product information with fellow hobbyists. Building on that foundation, we formally registered rrscenery.com in 1996, establishing our online identity. By 2002, we introduced a basic e‑commerce platform that enabled customers to place orders directly through the site. Over the years, his son George has enhanced the platform, adding secure payment processing, user accounts, and order-management tools as industry standards have evolved. Concurrently, we scaled up production: installing new crushers, commissioning an automated screening plant, and streamlining our bagging and processing lines. This steady, customer-driven evolution—from an improvised 1995 prototype website to today’s robust online store and manufacturing capabilities—reflects our commitment to providing practical, reliable solutions for model railroad enthusiasts.
Material Sourcing
Arizona Rock & Mineral Co. acquires raw rock from suppliers offering the proper coloration and texture, often obtaining it by the truckload from quarries and reclaiming it from closed yards that are no longer servicing large commercial projects. Upon delivery, rock is fed into our primary processing line, where approximately 85 percent of the material is reduced, screened, and graded to finished-product granulometries. Any oversized pieces are immediately re‑crushed to the correct size. Occasionally, a small percentage is wasted due to natural contaminants, inadvertent mixing with foreign materials, or handling errors; however, the majority of this byproduct that settles on the ground is collected and reprocessed into new scenic products. This flexible sourcing and high‑yield processing ensure we can offer a broad palette of authentic, “lived‑in” ballast colors without reliance on proprietary mining operations.
Quality Control Standards
At Arizona Rock & Mineral Co., we ensure color purity by thoroughly cleaning our processing plant between every production run, preventing the cross-mixing of materials. We stock all products as inventory items, crushing each blend on a regular schedule—approximately every few months—to keep supplies fresh without reprocessing on every individual order.
Material is screened precisely to hobby scales in a single pass: we remove all dust and fines (powder smaller than N scale), then sieve out N scale granules, followed by HO scale material. If any categories—O scale, G scale, Rock #5, Boulder #6, or #7—are underrepresented, we perform additional screening or return the material for re-crushing. Finally, each screened batch is carefully boxed, labeled, and shipped to the correct customer, ensuring consistent quality and a truly “lived‑in” ballast aesthetic.
Production
Production begins with the most significant rock fragments passing through a primary jaw crusher, reducing them to intermediate sizes. Those intermediate pieces then feed into a roll crusher for final sizing, ensuring consistent granule distributions for every scale. Next, vibratory classifiers remove residual dust and any remaining oversized particles. During screening, the material is dried naturally under the intense Arizona sun, eliminating the need for heating to remove moisture, while achieving moisture levels that prevent clumping in storage and on the layout.
To safeguard product integrity during transit, we pack the finished product into thick 4mm poly bags, cushioned with newspaper padding. This combination prevents bag rupture and label damage throughout shipping.
Premium Rock Ballast Offerings
Arizona Rock & Mineral Co. offers an all‑natural ballast made exclusively from authentic Arizona rock, showcasing a palette of hues that matches railroads worldwide. Each color faithfully replicates real trackside tones—from sun‑bleached desert tans to volcanic blacks and iron‑rich reds—ensuring your layout captures the unique character of any locale. Our unmatched collection of natural colors sets a new standard in realism for model railroad scenery.
Scenic Collection
Complement your ballast with our complete line of scenic aggregates—sand washes, riverbed gravels, and mountain scree—available in N, HO, O, and G scales. These ready-to-use materials enable you to craft intricate terrain with minimal preparation. We also capture and save the fine dust for use as ground cover and pigments, adding subtle color variation to scenery.
Additionally, we offer the best selection of natural rocks and boulders in the industry—ranging from small cobbles to large scenic stones—enabling you to model realistic rock formations and landscape features with ease.
Bulk Shipping
For clubs, retailers, and large-scale dioramas, choose our full box option. Volume discounts apply automatically, and durable containers simplify storage and workshop organization. We extend these benefits to all customers, offering industry-leading discounts to builders of the largest layouts, and provide dedicated support to keep the hobby thriving in the 21st century.
Consultation and Support
We offer personalized layout consultations—featuring grading advice, material recommendations, and application tutorials—backed by step-by-step articles and a responsive customer hotline. Let us help you bring your vision to life at no cost.
Family
George Anderson has maintained and grown our website and online marketing since 2003. From 2009 through 2022, while Phil and Jane’s son, Bill, battled recurring ICU stays and death, and Phil faced advancing dementia, George served as the backbone of our operation, shouldering production, raw-material handling, website maintenance, and marketing. In 2017, we hired part-time assistants to assist with production, thereby increasing our capacity and ensuring that orders moved smoothly.
In 2019, when Phil moved into a nursing home, George had already assumed full responsibility for day-to-day operations. This immense undertaking ensured customers were served and orders were fulfilled.
However, when the COVID-19 pandemic struck in early 2020, we made the difficult decision to let our part-time team go, as all operations take place in our home. As a result, George became the sole person overseeing production, ensuring that shipments continued uninterrupted despite global disruptions. This did not go so well, but we managed to keep afloat during those tough times.
In 2024, John Anderson, another one of thier sons returned to Paulden to manage on‑site production, freeing George to concentrate entirely on marketing and website development. You may have noticed more up‑to‑date photos and richer product descriptions on armballast.com; George now refines content and imagery for each listing on a weekly basis.
Together, this dedicated team supports hobbyists, enabling us to do more—faster and more effectively—than ever before.
Special Promotions & Partnerships
Join our newsletter for exclusive discounts, early access to new lines, and invites to live demos. We regularly collaborate with local clubs for co‑branded giveaways and workshop sponsorships. Become part of the Arizona Rock & Mineral Co. community today!
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