How did they make that. Part 3 /

This video discusses how slate is a valued roofing material for houses due to its durability. It also shows the step-by-step processes used by the British mining industry to mine and prepare the slate boulders for use as roofing material.

Bibliographic Details
Corporate Author: Alexander Street (Firm)
Format: Video
Language:English
Language Notes:In English.
Published: New York, NY : Big Media, 2010.
Subjects:
Online Access:Connect to this streaming video (Alexander Street Press)
Description
Summary:This video discusses how slate is a valued roofing material for houses due to its durability. It also shows the step-by-step processes used by the British mining industry to mine and prepare the slate boulders for use as roofing material.
Item Description:Title from resource description page (viewed April 12, 2017).
Physical Description:1 online resource (8 minutes)
Playing Time:00:08:08