M

MLC Tech Stack

Integrated lime and calcium products manufacturer with mining, production, and logistics

Chemical Manufacturing St. Louis, MO 501–1,000 employees Founded 1907 Privately Held

MLC operates a vertically integrated limestone-to-calcium supply chain across nine production sites and multiple distribution hubs in North America. The tech stack is heavily weighted toward industrial controls (Allen-Bradley PLC / SCADA) and basic office tools, with recent Samsara adoption suggesting a push into fleet and asset visibility—a logical move for a company that owns its own trucking subsidiary. Current hiring is operations-heavy (nearly 40% of open roles), concentrated at mid and junior levels, and focused on capital projects, maintenance planning, and safety standards, indicating active infrastructure investment and an organizational shift toward more structured, data-informed operations.

Tech Stack 14 technologies

Core StackMicrosoft Office Windows XP Excel Allen-Bradley MicroLogix Allen-Bradley CompactLogix Allen-Bradley ControlLogix SCADA PLC Samsara Word Outlook PowerPoint Microsoft Access LIMS

What MLC Is Building

◆Challenges

Maintaining environmental compliance
Capital project cost overruns
Reducing downtime
Reducing workplace incidents
Inventory optimization
Ensuring compliance with safety regulations
Creating efficiencies
Reducing production costs
Standardizing processes across sites
Capital spending process

▲Active Projects

Qcqa program development
Capital spending projects
Major outages
Minor maintenance projects
Shutdown maintenance planning
Safety standards update
Reliability-based maintenance strategy development
Install mechanical systems to improve operations
Continuous improvement initiatives for accounting team
Annual budget development and review

Hiring Activity

Accelerating45 roles · 25 in 30d

Department

Ops

19

Engineering

11

Manufacturing

9

HR

4

Finance

1

Healthcare

1

Logistics

1

Product

1

Seniority

Mid

21

Junior

14

Manager

6

Senior

5

Lead

1

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About MLC

MLC (formerly Mississippi Lime Company) is a privately held calcium products and limestone manufacturer founded in 1907, headquartered in St. Louis, MO. The company operates the largest lime facility in the Americas, mining and processing high-purity limestone into quicklime, hydrated lime, calcium carbonate, and pulverized limestone for food, construction, steel, environmental, and specialty-chemical end-markets. Production is distributed across nine facilities in the Midwest, Southeast, and Mid-Atlantic, supported by MLC Trucking, an in-house logistics operation. The customer base spans food processors, steel mills, paint and coatings manufacturers, glass producers, and environmental remediation projects.

HeadquartersSt. Louis, MO

Company Size501–1,000 employees

Founded1907

Hiring MarketsUnited States

Frequently Asked Questions

What technology does MLC use for manufacturing operations?

Allen-Bradley programmable logic controllers (MicroLogix, CompactLogix, ControlLogix) integrated with SCADA systems for process control. The company also runs LIMS (laboratory information management) for quality assurance and recently adopted Samsara for fleet and asset tracking.

Where does MLC operate production facilities?

Nine primary facilities across the United States: Ste. Genevieve MO, Calera AL, Verona KY, Vicksburg MS, Weirton WV, Chester SC, Mobile AL, Prairie du Rocher IL, and Bridgeville PA, plus multiple distribution sites nationwide.