> For the complete documentation index, see [llms.txt](https://nbmofficialwiki.gitbook.io/nbm-shadow-depths/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nbmofficialwiki.gitbook.io/nbm-shadow-depths/overview/nft-battle-miners-official-wiki/v-arcadian-mining/how-construction-cards-work.md).

# HOW CONSTRUCTION CARDS WORK

[Construction Cards](/nbm-shadow-depths/overview/nft-battle-miners-official-wiki/iv-nbm-nfts/nft-assets/construction-cards.md) are the most powerful assets in NBM. They can greatly boost the yields of any operation. They act as a card that extends the properties of a land, including its size (i.e., the number of units that can mine on the land), its RESM and NFTM (respectively the amount of resource/NFTs that can be extracted every hour). Additionally, Construction cards offer an extra bonus (%) that stimulates both final RESM/NFTM values.

To better understand how Construction cards boost the yields of mining operations, this section of the Wiki is offered as a video tutorial.

{% embed url="<https://www.youtube.com/watch?v=vV3sd818GpQ>" %}