A couple of examples:
... in which they were involved. Many of the injuries could have been avoided had the employee been wearing STEEL-REINFORCED SAFETY or BOOTS. These shoes are ...

www.fsai.on.ca/CC01_022.HTM

... the humble but venerable Dutch clog can go toe-to-toe with STEEL-REINFORCED SAFETY BOOTS in the workplace. "We were very tough on them, and they came through ...
www.dutchwoodenshoes.com/Merchant2/html/safety.htm

Suerte

Davorka

Safety Steel Tipped Heavy Duty Boots

Safety Steel Tipped Work Boots

THESE EXTRACTS ARE FROM THIS PAGE OF BOOTS
http://www.google.com/search?q=cache:community.wow.net/amose...


Employers should adopt contingency measures to provide safety equipment and personal protective equipment, such as safety helmets, waterproof ***safety boots, raincoats etc., for the safety of essential staff who remain on duty.
FROM
http://www.google.com/search?q=cache:www.lrpu.labour.gov.hk/...

...specific gear such as safety wear, steel toe work boots and other...
FROM
http://www.google.com/search?q=cache:web.ukonline.co.uk/wist...

I think you have to include the 'steel toe/tipped' part. The greatest danger, probably, for stevedore feet, is something crushing their toes. Also the use of 'casquillo' would require this element to be included.

The reason for this word is that stevedores wear shoes with a hard protective metal covering that protects their toes in case something falls on them. Thus: hard toe+ shoe.

Regards,
B.Deffenbaugh

this are boots made of material to protect the workers feet

This was the most common term when I wore them, but I´ve also seen "steel-toed safety boots," and "Steel-reinforced boots," (as I think someone else came close to suggesting).