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What is Hydrogen Sulfide or H2S?

12/23/2025

What is Hydrogen Sulfide or H2S?

What is H2S? Hydrogen sulfide (H2S) is a colorless flammable gas that is toxic at extremely low concentrations and poses a potentially lethal hazard to workers in several industry sectors.
How Many Hazard Classes Are There?

12/15/2025

How Many Hazard Classes Are There?

Understanding how and why hazardous materials/dangerous goods are categorized into "classes" and "divisions" for transportation is fundamental to compliance with US and international shipping regulations.
Best of 2025: Top 3 Videos of the Year

12/15/2025

Best of 2025: Top 3 Videos of the Year

Thank you to everyone who visited our YouTube page this year, shared these videos with colleagues on social media, or checked out a video here on Lion.com. 
Best of 2025: EHS Guides and Cheat Sheets

12/15/2025

Best of 2025: EHS Guides and Cheat Sheets

Lion most popular whitepapers/guides and "cheat sheets" of 2025.
PHMSA Shares Hazmat Enforcement Priorities for 2026

12/12/2025

PHMSA Shares Hazmat Enforcement Priorities for 2026

Get familiar with PHMSA's priorities for inspecting hazmat shippers' facilities and enforcing the Hazardous Materials Regulations, including more scrutiny on lithium battery shipments. 
2026 Hazmat and RCRA Training Schedules Out Now

12/11/2025

2026 Hazmat and RCRA Training Schedules Out Now

See Lion's 2026 schedule of workshops and webinars to find out when expert-led hazardous materials and RCRA training will be in your area next year or find a webinar that fits your schedule.
2026 Lithium Battery State of Charge Cheat Sheet

12/11/2025

2026 Lithium Battery State of Charge Cheat Sheet

The current recommended limits on state of charge for lithium batteries during transport aboard aircraft will become mandatory requirements as of January 1, 2026.
e-Manifest Reports Must Be Submitted Online as of 12/1

12/10/2025

e-Manifest Reports Must Be Submitted Online as of 12/1

As of December 1, 2025, electronic submission of certain hazardous waste Manifest-related reports, and export manifests, is now mandatory. 
Addendum I to the 2026 IATA DGR Released

12/5/2025

Addendum I to the 2026 IATA DGR Released

IATA has released the first Addendum to the 67th Edition of its Dangerous Goods Regulations (2026). Mandatory compliance with the new edition begins on January 1.
TSCA Activity Tracker (2025–26)

12/5/2025

TSCA Activity Tracker (2025–26)

Tracking TSCA-mandated chemical risk evaluations and new prohibitions, restrictions, and management standards for chemical manufacturers, distributors, and users.

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Lion - Quotes

The workshop covered a lot of information without being too overwhelming. Lion is much better, more comprehensive than other training providers.

George Alva

Manufacturing Manager

I can't say enough how pleased I was with this course! Everything finally makes sense.

Kim Graham

Lab Manager

Best course instructor I've ever had. Funny, relatable, engaging; made it interesting and challenged us as the professionals we are.

Amanda Schwartz

Environmental Coordinator

Excellent course. Very interactive. Explanations are great whether you get the questions wrong or right.

Gregory Thompson

Environmental, Health & Safety Regional Manager

This is the best RCRA training I've experienced! I will be visiting Lion training again.

Cynthia L. Logsdon

Principal Environmental Engineer

I tried other environmental training providers, but they were all sub-standard compared to Lion. I will not stray from Lion again!

Sara Sills

Environmental Specialist

The exercises in the DOT hazardous materials management course are especially helpful in evaluating your understanding of course information.

Morgan Bliss

Principal Industrial Hygienist

The course was very well structured and covered the material in a clear, concise manner.

Ian Martinez

Hazmat Shipping Professional

Amazing instructor; real-life examples. Lion training gets better every year!

Frank Papandrea

Environmental Manager

As always, Lion never disappoints

Paul Resley

Environmental Coordinator

Download Our Latest Whitepaper

Just starting out with shipping lithium batteries? The four fundamental concepts in this guide are the place to start.

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