{"version":"1.0","provider_name":"Combi Works","provider_url":"https:\/\/www.combiworks.com\/en\/","author_name":"KimTakala","author_url":"https:\/\/www.combiworks.com\/en\/author\/kimtakala\/","title":"Manhole covers - where are they coming from? - Combi Works","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"mSqXARHV98\"><a href=\"https:\/\/www.combiworks.com\/en\/blog\/manhole-covers-where-are-they-coming-from\/\">Manhole covers &#8211; where are they coming from?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.combiworks.com\/en\/blog\/manhole-covers-where-are-they-coming-from\/embed\/#?secret=mSqXARHV98\" width=\"600\" height=\"338\" title=\"&#8220;Manhole covers &#8211; where are they coming from?&#8221; &#8212; Combi Works\" data-secret=\"mSqXARHV98\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.combiworks.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.combiworks.com\/wp-content\/uploads\/2023\/06\/post_image_04.jpg","thumbnail_width":1200,"thumbnail_height":1601,"description":"Manhole covers, those iron things that we all walk over each day of our lives. Have you ever stopped to think of what mysteries lie behind them? For example, in Finland they are mostly round, why is that? It is said that the reason for manhole covers being round is that the cover could not ... Read more"}