You asked to see how it was done. Here is the video to explain. This shows how you can achieve quite dramatic black and white conversions using only Lightroom. You don’t need any other software or filters. What limits you is your imagination.
I hope you find this video useful and don’t forget to subscribe to my You Tube channel if you haven’t already.
The Lightweight Photographer 
One of the most helpful workflow videos I have seen for black and white conversion. Thanks.
Thanks Mike, the feedback is much appreciated